National Library of Energy BETA

Sample records for real-time information networks

  1. Instrumenting Wireless Sensor Networks for Real-Time Surveillance

    E-Print Network [OSTI]

    Instrumenting Wireless Sensor Networks for Real-Time Surveillance Songhwai Oh, Phoebus Chen information is not available, the classification-based tracking algorithm behaves as the NNF. Considering

  2. Real-time control over networks 

    E-Print Network [OSTI]

    Ji, Kun

    2007-09-17

    issues regarding control over networks and can be the guidelines of NCS design. A single actuator ball magnetic-levitation (maglev) system is implemented as a test bed for the real-time control over networks to illustrate and verify the theoretical...

  3. Real-Time Information Processing of Environmental Sensor Network Data using

    E-Print Network [OSTI]

    Roberts, Stephen

    or aggregation to provide useful summary information to users [Hart and Martinez 2006]. Providing real-describing data formats, and standard protocols such that the existence and capabilities of sensors can

  4. Wireless technology collects real-time information from oil and...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Wireless technology collects real-time information from oil and gas wells Wireless technology collects real-time information from oil and gas wells The patented system delivers...

  5. REAL-TIME OPTIMIZATION FOR AIR LIQUIDE GAS PIPELINES NETWORK

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    REAL-TIME OPTIMIZATION FOR AIR LIQUIDE GAS PIPELINES NETWORK Yash Puranik and Nick Sahinidis (CMU pipelines connecting air separation units and consumers Consumer Consumer O2 network N2 network #12

  6. Real-time neural network earthquake profile predictor

    DOE Patents [OSTI]

    Leach, Richard R. (Castro Valley, CA); Dowla, Farid U. (Castro Valley, CA)

    1996-01-01

    A neural network has been developed that uses first-arrival energy to predict the characteristics of impending earthquake seismograph signals. The propagation of ground motion energy through the earth is a highly nonlinear function. This is due to different forms of ground motion as well as to changes in the elastic properties of the media throughout the propagation path. The neural network is trained using seismogram data from earthquakes. Presented with a previously unseen earthquake, the neural network produces a profile of the complete earthquake signal using data from the first seconds of the signal. This offers a significant advance in the real-time monitoring, warning, and subsequent hazard minimization of catastrophic ground motion.

  7. Real-time neural network earthquake profile predictor

    DOE Patents [OSTI]

    Leach, R.R.; Dowla, F.U.

    1996-02-06

    A neural network has been developed that uses first-arrival energy to predict the characteristics of impending earthquake seismograph signals. The propagation of ground motion energy through the earth is a highly nonlinear function. This is due to different forms of ground motion as well as to changes in the elastic properties of the media throughout the propagation path. The neural network is trained using seismogram data from earthquakes. Presented with a previously unseen earthquake, the neural network produces a profile of the complete earthquake signal using data from the first seconds of the signal. This offers a significant advance in the real-time monitoring, warning, and subsequent hazard minimization of catastrophic ground motion. 17 figs.

  8. Reliable Downlink Scheduling for Wireless Networks with Real-Time and Non-Real Time Clients 

    E-Print Network [OSTI]

    Jain, Abhishek

    2014-08-05

    In this thesis, we studied the problem of designing a down link scheduling policy to serve multiple types of clients from a base station in a time-varying wireless network. An ideal scheduling policy is fair among the clients, provides reliability...

  9. Real-time communication in FDDI-based networks 

    E-Print Network [OSTI]

    Kumar, Amit Virendra

    1995-01-01

    The Fiber Distributed Data Interface (FDDI) is recommended as a candidate for many hard real-time local-area communication systems. The Timed-Token Medium Access Control (MAC) Protocol of FDDI is capable of guaranteeing ...

  10. Scheduling of real-time communication network for parallel processing 

    E-Print Network [OSTI]

    Li, Hung

    1995-01-01

    As real-time applications become more and more complicated their demands of processing capacity can hardly be satisfied. Massively parallel computers, such as Intel Paragon, with their scalable architecture and tremendous ...

  11. Real-time Control of a Tokamak Plasma Using Neural Networks

    E-Print Network [OSTI]

    Bishop, Christopher M.

    Real-time Control of a Tokamak Plasma Using Neural Networks Christopher M. Bishop , Paul S. Haynes of neural networks for real-time control of the high temperature plasma in a tokamak fusion experiment. The tokamak is currently the principal experimental device for research into the magnetic confinement approach

  12. Living Document Proposal for a Statewide California Real Time Network

    E-Print Network [OSTI]

    Sandwell, David T.

    early warning systems for geological (earthquakes, tsunamis, volcanos, landslides) and atmospheric directly to the California Spatial Reference System (CSRS) and the National Spatial Reference System (NSRS in the Master Plan, specifically "real-time infrastructure systems1 ." In addition to providing a much needed

  13. TOWARDS REAL-TIME METADATA FOR SENSOR-BASED NETWORKS AND GEOGRAPHIC DATABASES

    E-Print Network [OSTI]

    Servigne, Sylvie

    TOWARDS REAL-TIME METADATA FOR SENSOR-BASED NETWORKS AND GEOGRAPHIC DATABASES C. Gutiérrez, S: Metadata, Sensor database, SpatioTemporal, Data Quality, GIS ABSTRACT: Nowadays, the geographic metadata of spatiotemporal data resulting from these sensors requires a definition of real- time metadata, especially

  14. A Wireless Internet-Based Observatory: The Real-time Coastal Observation Network

    E-Print Network [OSTI]

    A Wireless Internet-Based Observatory: The Real-time Coastal Observation Network (ReCON) S. A community and educational institutions through the internet. A real-time database management system provides to the success of regional coastal ocean observing systems. The pervasiveness of wireless internet technology

  15. Real-Time Communication and Coordination in Embedded Sensor Networks

    E-Print Network [OSTI]

    Lu, Chenyang

    sensors and actuators. Because of this interaction, we find that sensor networks are very data-centric. These networks are very data-centric, with data queries being issued from base stations and time-dependent sensor

  16. Closed-loop real-time control on distributed networks 

    E-Print Network [OSTI]

    Ambike, Ajit Dilip

    2004-11-15

    This thesis is an e?ort to develop closed-loop control strategies on computer networks and study their stability in the presence of network delays and packet losses. An algorithm using predictors was designed to ...

  17. Control of real-time multimedia applications in best-effort networks 

    E-Print Network [OSTI]

    Ye, Dan

    2009-05-15

    The increasing demand for real-time multimedia applications and the lack of quality of service (QoS) support in public best-effort or Internet Protocol (IP) networks has prompted many researchers to propose improvements ...

  18. Robotic Local Area Networks with Fault-Tolerant Distributed Layers for Real-Time Control

    E-Print Network [OSTI]

    Liberatore, Vincenzo

    manipulation of a solar panel. The expected overall outcome will consists of a modular software platform teams to perform complex real-time tasks. Robotic teams necessitate innovative networks technology

  19. Adaptive control of real-time media applications in best-effort networks 

    E-Print Network [OSTI]

    Khariwal, Vivek

    2004-11-15

    Quality of Service (QoS) in real-time media applications can be defined as the ability to guarantee the delivery of packets from source to destination over best-effort networks within some constraints. These constraints ...

  20. Real-Time Traffic Information for Emergency Evacuation Operations: Phase A Final Report

    SciTech Connect (OSTI)

    Franzese, Oscar [ORNL; Zhang, Li [Mississippi State University (MSU); Mahmoud, Anas M. [Mississippi State University (MSU); Lascurain, Mary Beth [ORNL; Wen, Yi [Mississippi State University (MSU)

    2010-05-01

    There are many instances in which it is possible to plan ahead for an emergency evacuation (e.g., an explosion at a chemical processing facility). For those cases, if an accident (or an attack) were to happen, then the best evacuation plan for the prevailing network and weather conditions would be deployed. In other cases (e.g., the derailment of a train transporting hazardous materials), there may not be any previously developed plan to be implemented and decisions must be made ad-hoc on how to proceed with an emergency evacuation. In both situations, the availability of real-time traffic information plays a critical role in the management of the evacuation operations. To improve public safety during a vehicular emergency evacuation it is necessary to detect losses of road capacity (due to incidents, for example) as early as possible. Once these bottlenecks are identified, re-routing strategies must be determined in real-time and deployed in the field to help dissipate the congestion and increase the efficiency of the evacuation. Due to cost constraints, only large urban areas have traffic sensor deployments that permit access to some sort of real-time traffic information; any evacuation taking place in any other areas of the country would have to proceed without real-time traffic information. The latter was the focus of this SERRI/DHS (Southeast Region Research Initiative/Department of Homeland Security) sponsored project. That is, the main objective on the project was to improve the operations during a vehicular emergency evacuation anywhere by using newly developed real-time traffic-information-gathering technologies to assess traffic conditions and therefore to potentially detect incidents on the main evacuation routes. Phase A of the project consisted in the development and testing of a prototype system composed of sensors that are engineered in such a way that they can be rapidly deployed in the field where and when they are needed. Each one of these sensors is also equipped with their own power supply and a GPS (Global Positioning System) device to auto-determine its spatial location on the transportation network under surveillance. The system is capable of assessing traffic parameters by identifying and re-identifying vehicles in the traffic stream as those vehicles pass over the sensors. The system of sensors transmits, through wireless communication, real-time traffic information (travel time and other parameters) to a command and control center via an NTCIP (National Transportation Communication for ITS Protocol) -compatible interface. As an alternative, an existing NTCIP-compatible system accepts the real-time traffic information mentioned and broadcasts the traffic information to emergency managers, the media and the public via the existing channels. A series of tests, both in a controlled environment and on the field, were conducted to study the feasibility of rapidly deploying the system of traffic sensors and to assess its ability to provide real-time traffic information during an emergency evacuation. The results of these tests indicated that the prototype sensors are reliable and accurate for the type of application that is the focus of this project.

  1. Real-Time Networked Control with Multiple Clients 

    E-Print Network [OSTI]

    Lee, Minhyung

    2010-01-14

    In this thesis closed-loop control strategies over a communication network with multiple clients are developed. To accomplish this objective, a steel-ball magnetic-levitation system, a DC motor speed-control system, and ...

  2. Real-time Enabled IEEE 802.15.4 Sensor Networks in Industrial Automation

    E-Print Network [OSTI]

    Breu, Ruth

    Real-time Enabled IEEE 802.15.4 Sensor Networks in Industrial Automation Feng Chen, Thomas Talanis, Industry Automation Division, Germany Abstract--Sensor networks have been investigated in many scenarios, sensor networks became also an interesting topic in industrial automation. Here, the main focus

  3. Using architecture information and real-time resource state to reduce power consumption and communication costs in parallel applications.

    SciTech Connect (OSTI)

    Brandt, James M.; Devine, Karen D.; Gentile, Ann C.; Leung, Vitus J.; Olivier, Stephen Lecler; Pedretti, Kevin; Rajamanickam, Sivasankaran; Bunde, David P.; Deveci, Mehmet; Catalyurek, Umit V.

    2014-09-01

    As computer systems grow in both size and complexity, the need for applications and run-time systems to adjust to their dynamic environment also grows. The goal of the RAAMP LDRD was to combine static architecture information and real-time system state with algorithms to conserve power, reduce communication costs, and avoid network contention. We devel- oped new data collection and aggregation tools to extract static hardware information (e.g., node/core hierarchy, network routing) as well as real-time performance data (e.g., CPU uti- lization, power consumption, memory bandwidth saturation, percentage of used bandwidth, number of network stalls). We created application interfaces that allowed this data to be used easily by algorithms. Finally, we demonstrated the benefit of integrating system and application information for two use cases. The first used real-time power consumption and memory bandwidth saturation data to throttle concurrency to save power without increasing application execution time. The second used static or real-time network traffic information to reduce or avoid network congestion by remapping MPI tasks to allocated processors. Results from our work are summarized in this report; more details are available in our publications [2, 6, 14, 16, 22, 29, 38, 44, 51, 54].

  4. CFlood: A Constrained Flooding Protocol for Real-Time Data Delivery in Wireless Sensor Networks

    E-Print Network [OSTI]

    Ravindran, Binoy

    CFlood: A Constrained Flooding Protocol for Real-Time Data Delivery in Wireless Sensor Networks Bo networks. We present a constrained flooding protocol, called CFlood that enhances the deadline satisfaction-time perfor- mance by flooding, but effectively constrains energy consumption by controlling the scale

  5. Application of Virtual Mobile Networking to Real-Time Patient Monitoring

    E-Print Network [OSTI]

    Bhatti, Saleem N.

    Application of Virtual Mobile Networking to Real-Time Patient Monitoring Devan Rehunathan of such technology in mobile Wireless Body Area Networks (WBANs) for medical purposes allow for inexpensive the vital signs of these patients remotely despite them being mobile. Applications of this approach can

  6. A REAL-TIME SPIKE-DOMAIN SENSORY INFORMATION PROCESSING SYSTEM Udayan Mallik1

    E-Print Network [OSTI]

    Cauwenberghs, Gert

    on the implementation of an autonomous, real-time, combined retinal/cortical system that can process video informa- tion of processing, and has advanced to very sophisticated models of retinal processing and the first layerA REAL-TIME SPIKE-DOMAIN SENSORY INFORMATION PROCESSING SYSTEM Udayan Mallik1 , R. Jacob Vogelstein

  7. Real-time Optical Network for Accelerator Control

    SciTech Connect (OSTI)

    Lee, Keun

    2012-06-27

    The timing requirements of a modern accelerator complex call for several features. The first is a system for high precision relative timing among accelerator components. Stabilized fiber links have already been demonstrated to achieve sub-10 femtoseconds relative timing precision. The second is a system for timing distribution of absolute time with sufficient precision to identify a specific RF bucket. The White Rabbit technology is a promising candidate to deliver the absolute time that is linked to the GPS clock. In this study we demonstrated that these two technologies can be combined in a way that the absolute time information can be delivered to the stabilized fiber link system. This was accomplished by researching the design of the stabilized fiber and White Rabbit systems and devising adaptation modules that facilitate co-existence of both systems in the same FPGA environment. We built a prototype system using off-the-shelf products and implemented a proof-of-concept version of the FPGA firmware. The test verified that the White Rabbit features operate correctly under the stabilized fiber system environment. This work demonstrates that turn-key femtosecond timing systems with absolute time information can be built cost effectively and deployed in various accelerator environments. This will lead to many new applications in chemistry, biology and surface dynamics, to name a few.

  8. Towards a Scalable and Reliable Real Time In-Network Data Analysis Infrastructure

    SciTech Connect (OSTI)

    Ciraci, Selim; Yin, Jian

    2011-12-01

    The smart grid applications requires real time analysis, response within the order of milliseconds and high-reliability because of the mission critical structure of the power grid system. The only way to satisfy these requirements is in network data analysis and build-in redundancy routing for failures. To achieve this, we propose a data dissemination system that builds routes using network flow algorithms, have in network processing of the data and utilize data encoding to cope with high latencies.

  9. Real Time Flow Estimation in Channel Networks using Lagrangian Data Qingfang Wu

    E-Print Network [OSTI]

    - formation about tidal forcing and salinity transport in the bays and channels of the Delta. Reliable flow in the Delta in a real-time mode, without dependence on historical data. Lagrangian data is obtained when a distributed network of channels, subject to quasi-periodic tidal forcing, in the Sacramento-San Joaquin River

  10. DESIGNING A REAL TIME SYSTEM FOR CAR NUMBER DETECTION USING DISCRETE HOPFIELD NETWORK

    E-Print Network [OSTI]

    Mishra, Prabhat

    DESIGNING A REAL TIME SYSTEM FOR CAR NUMBER DETECTION USING DISCRETE HOPFIELD NETWORK A.BANERJEE1@yahoo.co.in Abstract The paper addresses a novel scheme for detection of car numbers from its rear end number plates. The work has extensive applications in automatic identification of cars, responsible for Cox pollution

  11. Fuzzy adaptive connection admission control for real-time applications in ATM-based heterogeneous networks 

    E-Print Network [OSTI]

    Zhang, Ying-Bi

    1997-01-01

    of network is popular lately due to their cost-effectiveness, high bandwidth, and scalability. For real-time applications, the most crucial quality of service is to meet deadline requirement which means timely and correct message delivery within the pre...

  12. Decentralized Real-time Control of Water Distribution Networks Using Self-organizing Multi-Agent Systems

    E-Print Network [OSTI]

    Bauer, Bernhard

    Decentralized Real-time Control of Water Distribution Networks Using Self-organizing Multi for the decentralized real- time control of water distribution networks. The agents, which are associated with every pump, tank, and water tower of such a distribution network, interact by means of a decentralized

  13. New Signal Processing Methods and Information Technologies for the Real Time Control of JET Reactor Relevant Plasmas

    E-Print Network [OSTI]

    New Signal Processing Methods and Information Technologies for the Real Time Control of JET Reactor Relevant Plasmas

  14. A methodology for predicting minimum travel paths using real-time traffic network data 

    E-Print Network [OSTI]

    Liu, Chang

    1991-01-01

    A METHODOLOGY FOR PREDICTING MINIMUM TRAVEL PATHS USING REAL-TIME TRAFFIC NETWORK DATA A Thesis by Chang Liu Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillrnent of the requirements for the degree... operations. ACKNOWLEDGEMENTS I would like to express special thanks to Dr. Daniel B. Fambro for his guidance, assistance, and patience from the initial stage of my graduate career at Texas A&M University through the final stage of the research documented...

  15. Real-time, intercontinental dermatology teaching of trainee physicians in Somaliland using a dedicated social networking portal

    E-Print Network [OSTI]

    Ali, Faisal R; Bowen, Jordan ST; Strachan, Jamie M; Handuleh, Jibriil; Finlayson, Alexander ET

    2012-01-01

    dedicated social networking portal Faisal R Ali 1,2 , Jordaninnovative social networking portal, to deliver real-time,providing a web-based portal that combines the concepts of

  16. FPGA Based Real-time Network Traffic Analysis using Traffic Dispersion Patterns

    SciTech Connect (OSTI)

    Khan, F; Gokhale, M; Chuah, C N

    2010-03-26

    The problem of Network Traffic Classification (NTC) has attracted significant amount of interest in the research community, offering a wide range of solutions at various levels. The core challenge is in addressing high amounts of traffic diversity found in today's networks. The problem becomes more challenging if a quick detection is required as in the case of identifying malicious network behavior or new applications like peer-to-peer traffic that have potential to quickly throttle the network bandwidth or cause significant damage. Recently, Traffic Dispersion Graphs (TDGs) have been introduced as a viable candidate for NTC. The TDGs work by forming a network wide communication graphs that embed characteristic patterns of underlying network applications. However, these patterns need to be quickly evaluated for mounting real-time response against them. This paper addresses these concerns and presents a novel solution for real-time analysis of Traffic Dispersion Metrics (TDMs) in the TDGs. We evaluate the dispersion metrics of interest and present a dedicated solution on an FPGA for their analysis. We also present analytical measures and empirically evaluate operating effectiveness of our design. The mapped design on Virtex-5 device can process 7.4 million packets/second for a TDG comprising of 10k flows at very high accuracies of over 96%.

  17. The Use of Wireless Internet Service to Access Real-Time Transit Information

    E-Print Network [OSTI]

    The Use of Wireless Internet Service to Access Real-Time Transit Information S.D. Maclean and D.J. Dailey, Dept. of Electrical Engineering, University of Washington Box 352500, Seattle, WA, 98195 stuart and data presentation, as well as presenting a comparison of wireless and wire-line usage. The system

  18. A Brain-to-Brain Interface for Real-Time Sharing of Sensorimotor Information

    E-Print Network [OSTI]

    Indiana University

    A Brain-to-Brain Interface for Real-Time Sharing of Sensorimotor Information Miguel Pais-Vieira1 Safra International Institute for Neuroscience of Natal (ELS-IINN), RN 59066-060, Natal, Brazil. A brain-to-brain the brains of two rats. In this BTBI, an ``encoder'' rat performed sensorimotor tasks that required

  19. Production, Manufacturing and Logistics Using real time information for effective dynamic scheduling

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    In many production processes real time information may be obtained from process control computers of the revised schedule against the production disturbance which results from changing the planned schedule. We into scheduling the complex production processes of steel continuous caster planning. Ó 2002 Elsevier Science B

  20. A Prototype ATM Network for Real Time Control of the LHC

    E-Print Network [OSTI]

    Herr, Werner; Wijnands, Thijs

    1999-01-01

    The LHC accelerator aims at injecting, accelerating and colliding beams with very well controlled beam parameters (e.g. momentum, orbit, tune and chromaticity). This is a non-trivial task since the super conducting main bending magnets will generate field errors with dynamic effects that may result in beam loss. To overcome this problem, real time control of beam parameters via the Power Converters has been proposed. This requires site wide deterministic communication of control data. In this paper we will outline some aspects of a prototype deterministic network for the LHC with a core based on ATM (Asynchronous Transfer Mode) communication technology.

  1. Real-Time Multi-Sensor Multi-Source Network Data Fusion Using Dynamic Traffic Assignment Models

    E-Print Network [OSTI]

    Ben-Akiva, Moshe E.

    This paper presents a model-based data fusion framework that allows systematic fusing of multi-sensor multi-source traffic network data at real-time. Using simulation-based Dynamic Traffic Assignment (DTA) models, the ...

  2. Lynx: Authenticated Anonymous Real-Time Reporting of Electric Vehicle Information

    E-Print Network [OSTI]

    Nahrstedt, Klara

    computation overhead during real-time reporting, and our imple- mentation on Raspberry Pi 2 shows that report

  3. Specification and Analysis of the AER/NCA Active Network Protocol Suite in Real-Time Maude

    E-Print Network [OSTI]

    Ã?lveczky, Peter Csaba

    Specification and Analysis of the AER/NCA Active Network Protocol Suite in Real-Time Maude Peter-Time Maude tool and the Maude formal methodology to the specification and analysis of the AER/NCA suite-sensitive behavior, the presence of probabilistic algorithms, and the composability of its components, AER/NCA poses

  4. RTRD: Real-Time and Reliable Data Delivery in Ad Hoc Networks

    E-Print Network [OSTI]

    Ravindran, Binoy

    -time task. A real-time task executes on an individual node, with a given termination time tT erm. As shown and has some data which requires to be delivered to another node before tT erm. The time for real-time data delivery is the task's slack time ST, ST = tT erm - tF inish. Before task execution starts, ET

  5. Development and operativity of a real-time radiological monitoring network centered on the nuclear power plant of Almaraz (Spain)

    SciTech Connect (OSTI)

    Baeza, A.; Miro, C.; Puerto, J.A. del; Rio, M. del; Ortiz, F.; Paniagua, J.M.

    1993-12-01

    This work presents the hardware and software characteristics of the environmental surveillance radiological network that has been installed around the nuclear power station of Almaraz (Spain). A description is given of the program RADLINE which allows radiological data to be logged in real time, and a study is made of the operativity of the network and the methodology followed in establishing the radiological pre-alert and alert levels.

  6. Real time explosive hazard information sensing, processing, and communication for autonomous operation

    DOE Patents [OSTI]

    Versteeg, Roelof J.; Few, Douglas A.; Kinoshita, Robert A.; Johnson, Douglas; Linda, Ondrej

    2015-12-15

    Methods, computer readable media, and apparatuses provide robotic explosive hazard detection. A robot intelligence kernel (RIK) includes a dynamic autonomy structure with two or more autonomy levels between operator intervention and robot initiative A mine sensor and processing module (ESPM) operating separately from the RIK perceives environmental variables indicative of a mine using subsurface perceptors. The ESPM processes mine information to determine a likelihood of a presence of a mine. A robot can autonomously modify behavior responsive to an indication of a detected mine. The behavior is modified between detection of mines, detailed scanning and characterization of the mine, developing mine indication parameters, and resuming detection. Real time messages are passed between the RIK and the ESPM. A combination of ESPM bound messages and RIK bound messages cause the robot platform to switch between modes including a calibration mode, the mine detection mode, and the mine characterization mode.

  7. Energy Saving Measures of Heating Network - Computerized Real-time Control System 

    E-Print Network [OSTI]

    Zhang, J.

    2006-01-01

    a new system control theory, that is computerize the real-time frequency conversion control or area,time, mode of heat transformation and temperature grads. The aim of the new theory is promoting the efficiency of energy conversion and minimizing...

  8. CONTAM 03 Embedded Networked Sensing in Soils: A Stochastic Data Assimilation Approach to Network Design and Real-time State and Parameter

    E-Print Network [OSTI]

    Soatto, Stefano

    CONTAM 03 Embedded Networked Sensing in Soils: A Stochastic Data Assimilation Approach to Network.g. sodium and/or nitrogen) and these excessive chemicals in soil could restrain crop growth and also pollute the groundwater beneath the irrigated lands. Thus, a monitoring and modeling system providing real-time soil state

  9. Real-time drill monitoring and control using building information models augmented with 3D imaging data

    E-Print Network [OSTI]

    Kamat, Vineet R.

    Real-time drill monitoring and control using building information models augmented with 3D imaging and incorporating point cloud data obtained from 3D imaging technologies1 into the drilling process in was de bridge deck. Once the point clouds were processed, zones which are safe for drilling were automatically

  10. Real-time detection of malicious network activity using stochastic models

    E-Print Network [OSTI]

    Jung, Jaeyeon, Ph. D. Massachusetts Institute of Technology

    2006-01-01

    This dissertation develops approaches to rapidly detect malicious network traffic including packets sent by portscanners and network worms. The main hypothesis is that stochastic models capturing a host's particular ...

  11. Experiments with the Tenet RealTime Protocol Suite on the Sequoia 2000 Wide Area Network

    E-Print Network [OSTI]

    Zhang, Hui

    of high network load and congestion. The protocols achieve this by using resource management, connection packet­switched networks to provide end­ to­end per­connection performance guarantees. This paper guarantees, even when the network is highly loaded. 1 This research was supported by the National Science

  12. Cross-Layer Enabled Translucent Optical Network with Real-time Impairment Awareness

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    improvements in: (1) energy efficiency by optimizing the usage of regenerators, and (2) network performance and transparent networks, and therefore, to reduce costs and energy consumption in OTNs [6]. The existing to significant energy savings by optimizing the usage of regeneration resources, but also to network performance

  13. Dynamically Managing the Real-time Fabric of a Wireless Sensor-Actuator Network

    E-Print Network [OSTI]

    Lemmon, Michael

    - water distribution and collection networks - traffic networks power inverter storage Micro-Grid examples of such systems are found in the controlling spatially distributed systems. - electric power grid Transmission success is influenced by multi-access interference (MAI) Pi = node i's transmitted power hij Pi

  14. The effect of congestion location on motorists' propensity to divert in response to real-time information 

    E-Print Network [OSTI]

    Jeyapaul, Anand

    1992-01-01

    to Real-Time Information. (December 1992) Anand Jeyapaul, B. Tech. , Indian Institute of Technology Chair of Advisory Committee: Dr. Conrad L. Dudek A work-based telephone survey of commuters in Dallas was done primarily to study if the motorists... such as age, sex, average travel time, and importance of arriving at work on time. Using the survey, motorist time savings values were obtained for four hypothetical radio traffic advisory messages, designed to vary alternative route and congestion location...

  15. Optimizing Wireless Network Protocols Using Real-Time Predictive Propagation Modeling

    E-Print Network [OSTI]

    Stancil, Daniel D.

    on the battlefield [1] and emergency disaster relief personnel coordinating efforts after a hurricane or earthquake in the network before they cause packets to be lost or delayed. Hardware Control (power, antenna, thresholds, etc

  16. Distributed connection management for real-time communication over wormhole-routed networks 

    E-Print Network [OSTI]

    Sundaresan, Sharad

    1997-01-01

    Wormhole networks provide a very high-speed communication medium that is well suited for a large number of bandwidth demanding applications. Unfortunately, the lack of buffering in the switches causes blocked packets to transiently monopolize...

  17. Wireless Internet Access To Real-Time Transit Information S.D. Maclean, University of Washington, Dept. of Electrical Engineering, Box 352500, Seattle,

    E-Print Network [OSTI]

    TRB 02-3863 Wireless Internet Access To Real-Time Transit Information S.D. Maclean, University departure times for buses at user-selectable geographic locations to Internet-enabled mobile devices.e., wired) Internet connectivity is not available. Wireless access to real-time transit information

  18. Robustness of Ethernet-Based Real-Time Networked Control System with Multi-Level Client/Server Architecture 

    E-Print Network [OSTI]

    Bibinagar, Naveen Kumar

    2010-10-12

    The importance of real-time communication at the device level in a factory automation setup is a widely researched area. This research is an effort to experimentally verify if Ethernet can be used as a real-time communication ...

  19. A Survey of Recent Results on Real-Time Wireless Networking

    E-Print Network [OSTI]

    a contract for flows with throughput as well as delay constraints. These contracts have two desirable properties: the contracts can be supported by the wireless network, and, further, the contracts and is no longer useful for its application. On the other hand, while such applications may tolerate a small

  20. Real-time analysis of aggregate network traffic for anomaly detection 

    E-Print Network [OSTI]

    Kim, Seong Soo

    2005-08-29

    .........................................................................82 2. Identification of Attackers? and Victims? Entire IP Address..........84 F. Comparison with IDS .............................................................................86 1. Intrusion Detection System and Snort... resources. Attack propagation could be slowed through early detection of attacks. Traditionally, Intrusion detection system (IDS) tools that rely upon operating system logs, process behaviors and firewall logs have been employed to monitor the network...

  1. Design of adaptive connection admission control in hard real-time ATM networks 

    E-Print Network [OSTI]

    Li, Cen

    1998-01-01

    and buffer requirements. Zhang and Ferrari [4] discussed how local deterministic delay bounds can be guaranteed over an ATM link for bursty traffic, even when the sum of peak rates of all the connections exceeds one. Deterministic delay bounds in networks...

  2. Real Time Selective Harmonic Minimization for Multilevel Inverters Connected to Solar Panels Using Artificial Neural Network Angle Generation

    SciTech Connect (OSTI)

    Tolbert, Leon M; Ozpineci, Burak; Filho, Faete; Cao, Yue

    2011-01-01

    This work approximates the selective harmonic elimination problem using artificial neural networks (ANNs) to generate the switching angles in an 11-level full-bridge cascade inverter powered by five varying dc input sources. Each of the five full bridges of the cascade inverter was connected to a separate 195-W solar panel. The angles were chosen such that the fundamental was kept constant and the low-order harmonics were minimized or eliminated. A nondeterministic method is used to solve the system for the angles and to obtain the data set for the ANN training. The method also provides a set of acceptable solutions in the space where solutions do not exist by analytical methods. The trained ANN is a suitable tool that brings a small generalization effect on the angles' precision and is able to perform in real time (50-/60-Hz time window).

  3. Building a wireless mesh networked real-time electricity metering system in an MIT dormitory

    E-Print Network [OSTI]

    Oehlerking, Austin L

    2009-01-01

    A competitive, closed-loop information feedback system of wireless electricity meters was designed, tested, and implemented in seven MIT dormitory rooms. The meters utilized Allegro Hall Effect current sensors as well as ...

  4. An Information-centric Communication Infrastructure for Real-time State Estimation of

    E-Print Network [OSTI]

    Poll, Erik

    components, e.g., distributed (renewable) energy resources (DERs) and electric vehicles, at distribution Distribution Networks W. K. Chai, N. Wang, K. V. Katsaros, G. Kamel, G. Pavlou, S. Melis, M. Hoefling, B network resource provisioning strategy in order to enable the agile PMU data communications in near real

  5. 1196 IEEE TRANSACTIONS ON NEURAL NETWORKS, VOL. 19, NO. 7, JULY 2008 On Real-Time AER 2-D Convolutions Hardware for

    E-Print Network [OSTI]

    Barranco, Bernabe Linares

    1196 IEEE TRANSACTIONS ON NEURAL NETWORKS, VOL. 19, NO. 7, JULY 2008 On Real-Time AER 2-D­event-rep- resentation (AER) technique, which is a spike-based biologically inspired image and video representation interfaces have been developed for generating AER streams from conven- tional computers and feeding them

  6. IEEE TRANSACTIONS ON NEURAL NETWORKS. VOL. 2, NO. 2, MARCH 1991 231 A Real-Time Neural System for Color Constancy

    E-Print Network [OSTI]

    Allman, John M.

    IEEE TRANSACTIONS ON NEURAL NETWORKS. VOL. 2, NO. 2, MARCH 1991 231 A Real-Time Neural System for Color Constancy Andrew Moore, Student Member, IEEE, John Allman, and Rodney M. Goodman, Member, IEEE and Neural Systems Program at the California Institute of Technology, Pasadena, CA 91125. IEEE Log Number

  7. Undergraduate Project: Implementing a Graphical User Interface for Real-Time Wireless Sensor Network Control and Data Visualization

    E-Print Network [OSTI]

    , this includes the ability to adjust, in near real-time, the sampling rate (e.g., 1 - 500 Hz) and signal language such as C++ (with OpenFrameworks) or Java. Additionally, such software must be cross

  8. Real-time Bus Information on Mobile Devices Stuart D. Maclean, Daniel J. Dailey

    E-Print Network [OSTI]

    - terface design. An overview of the system architecture is provided, together with some preliminary usage is not available. This mobile MyBus information system is the project discussed in this paper. It emphasises brows estimates suggest that the figure will reach the billion mark by 2004[1]. Of these, a substantial num- ber

  9. Real Time Selective Harmonic Minimization for Multilevel Inverters Connected to Solar Panels Using Artificial Neural Network Angle Generation

    E-Print Network [OSTI]

    Tolbert, Leon M.

    Real Time Selective Harmonic Minimization for Multilevel Inverters Connected to Solar Panels Using varying DC input sources. Five 195 W solar panels were used as the DC source for each full bridge cells or solar panels and will consequently bring a voltage unbalance depending on the system dynamics

  10. A lightweight transport protocol for multi-resolution and real-time multimedia communications over heterogenous networks 

    E-Print Network [OSTI]

    Cheng, Sheng-Te

    1995-01-01

    ) REQUIREMENTS AND A LIGHTWEIGHT TRANSPORT PROTOCOL (LWTP) A. QOS Requirements 1. Low Delay 2. Low Jitter 3. Adequate Bandwidth 4. Media Synchronization 5. Reliability B. Lightweight Transport Protocol (LWTP) and QOS (Qual- ity of Service) 1. Why... Lightweight Transport Protocols 2. Previous LWTP Research C. An Overview of RTP (Real-time Transport Protocol) 1. The RTP Headers 2. RTP Header Extension 3. RTP Control Protocol (RTCP) 12 13 13 17 18 19 19 20 21 22 23 24 24 24 III THE LWTP...

  11. Image processing with cellular nonlinear networks implemented on field-programmable gate arrays for real-time applications in nuclear fusion

    SciTech Connect (OSTI)

    Palazzo, S.; Vagliasindi, G.; Arena, P. [Dipartimento di Ingegneria Elettrica Elettronica e dei Sistemi, Universita degli Studi di Catania, 95125 Catania (Italy); Murari, A. [Consorzio RFX-Associazione EURATOM ENEA per la Fusione, I-35127 Padova (Italy); Mazon, D. [Association EURATOM-CEA, CEA Cadarache, 13108 Saint-Paul-lez-Durance (France); De Maack, A. [Arts et Metiers Paris Tech Engineering College (ENSAM), 13100 Aix-en-Provence (France); Collaboration: JET-EFDA Contributors

    2010-08-15

    In the past years cameras have become increasingly common tools in scientific applications. They are now quite systematically used in magnetic confinement fusion, to the point that infrared imaging is starting to be used systematically for real-time machine protection in major devices. However, in order to guarantee that the control system can always react rapidly in case of critical situations, the time required for the processing of the images must be as predictable as possible. The approach described in this paper combines the new computational paradigm of cellular nonlinear networks (CNNs) with field-programmable gate arrays and has been tested in an application for the detection of hot spots on the plasma facing components in JET. The developed system is able to perform real-time hot spot recognition, by processing the image stream captured by JET wide angle infrared camera, with the guarantee that computational time is constant and deterministic. The statistical results obtained from a quite extensive set of examples show that this solution approximates very well an ad hoc serial software algorithm, with no false or missed alarms and an almost perfect overlapping of alarm intervals. The computational time can be reduced to a millisecond time scale for 8 bit 496x560-sized images. Moreover, in our implementation, the computational time, besides being deterministic, is practically independent of the number of iterations performed by the CNN - unlike software CNN implementations.

  12. Real time automated inspection

    DOE Patents [OSTI]

    Fant, K.M.; Fundakowski, R.A.; Levitt, T.S.; Overland, J.E.; Suresh, B.R.; Ulrich, F.W.

    1985-05-21

    A method and apparatus are described relating to the real time automatic detection and classification of characteristic type surface imperfections occurring on the surfaces of material of interest such as moving hot metal slabs produced by a continuous steel caster. A data camera transversely scans continuous lines of such a surface to sense light intensities of scanned pixels and generates corresponding voltage values. The voltage values are converted to corresponding digital values to form a digital image of the surface which is subsequently processed to form an edge-enhanced image having scan lines characterized by intervals corresponding to the edges of the image. The edge-enhanced image is thresholded to segment out the edges and objects formed by the edges by interval matching and bin tracking. Features of the objects are derived and such features are utilized to classify the objects into characteristic type surface imperfections. 43 figs.

  13. Real time analysis under EDS

    SciTech Connect (OSTI)

    Schneberk, D.

    1985-07-01

    This paper describes the analysis component of the Enrichment Diagnostic System (EDS) developed for the Atomic Vapor Laser Isotope Separation Program (AVLIS) at Lawrence Livermore National Laboratory (LLNL). Four different types of analysis are performed on data acquired through EDS: (1) absorption spectroscopy on laser-generated spectral lines, (2) mass spectrometer analysis, (3) general purpose waveform analysis, and (4) separation performance calculations. The information produced from this data includes: measures of particle density and velocity, partial pressures of residual gases, and overall measures of isotope enrichment. The analysis component supports a variety of real-time modeling tasks, a means for broadcasting data to other nodes, and a great degree of flexibility for tailoring computations to the exact needs of the process. A particular data base structure and program flow is common to all types of analysis. Key elements of the analysis component are: (1) a fast access data base which can configure all types of analysis, (2) a selected set of analysis routines, (3) a general purpose data manipulation and graphics package for the results of real time analysis. Each of these components are described with an emphasis upon how each contributes to overall system capability. 3 figs.

  14. Modeling Information Diffusion in Implicit Networks Jaewon Yang

    E-Print Network [OSTI]

    Thrun, Sebastian

    --Social media forms a central domain for the production and dissemination of real-time information. Even though such flows of information have traditionally been thought of as diffusion processes over social networks time, assembled from many small pieces, and conveyed through social networks as well as other means

  15. ParkNet: A Mobile Sensor Network for Harvesting Real Time Vehicular Parking Information

    E-Print Network [OSTI]

    Gruteser, Marco

    of wasted gas. A recent study [2] indicated that up to 45% of traffic on some streets in New York City by municipal- ities in the ground or in parking meters. This necessitates a large fixed cost of installation of the problem in large cities and the governerment's dedication to long term investments in a smart parking

  16. REAL TIME SYSTEM OPERATIONS 2006-2007

    SciTech Connect (OSTI)

    Eto, Joseph H.; Parashar, Manu; Lewis, Nancy Jo

    2008-08-15

    The Real Time System Operations (RTSO) 2006-2007 project focused on two parallel technical tasks: (1) Real-Time Applications of Phasors for Monitoring, Alarming and Control; and (2) Real-Time Voltage Security Assessment (RTVSA) Prototype Tool. The overall goal of the phasor applications project was to accelerate adoption and foster greater use of new, more accurate, time-synchronized phasor measurements by conducting research and prototyping applications on California ISO's phasor platform - Real-Time Dynamics Monitoring System (RTDMS) -- that provide previously unavailable information on the dynamic stability of the grid. Feasibility assessment studies were conducted on potential application of this technology for small-signal stability monitoring, validating/improving existing stability nomograms, conducting frequency response analysis, and obtaining real-time sensitivity information on key metrics to assess grid stress. Based on study findings, prototype applications for real-time visualization and alarming, small-signal stability monitoring, measurement based sensitivity analysis and frequency response assessment were developed, factory- and field-tested at the California ISO and at BPA. The goal of the RTVSA project was to provide California ISO with a prototype voltage security assessment tool that runs in real time within California ISO?s new reliability and congestion management system. CERTS conducted a technical assessment of appropriate algorithms, developed a prototype incorporating state-of-art algorithms (such as the continuation power flow, direct method, boundary orbiting method, and hyperplanes) into a framework most suitable for an operations environment. Based on study findings, a functional specification was prepared, which the California ISO has since used to procure a production-quality tool that is now a part of a suite of advanced computational tools that is used by California ISO for reliability and congestion management.

  17. Real Time Grid Reliability Management 2005

    SciTech Connect (OSTI)

    Eto, Joe; Eto, Joe; Lesieutre, Bernard; Lewis, Nancy Jo; Parashar, Manu

    2008-07-07

    The increased need to manage California?s electricity grid in real time is a result of the ongoing transition from a system operated by vertically-integrated utilities serving native loads to one operated by an independent system operator supporting competitive energy markets. During this transition period, the traditional approach to reliability management -- construction of new transmission lines -- has not been pursued due to unresolved issues related to the financing and recovery of transmission project costs. In the absence of investments in new transmission infrastructure, the best strategy for managing reliability is to equip system operators with better real-time information about actual operating margins so that they can better understand and manage the risk of operating closer to the edge. A companion strategy is to address known deficiencies in offline modeling tools that are needed to ground the use of improved real-time tools. This project: (1) developed and conducted first-ever demonstrations of two prototype real-time software tools for voltage security assessment and phasor monitoring; and (2) prepared a scoping study on improving load and generator response models. Additional funding through two separate subsequent work authorizations has already been provided to build upon the work initiated in this project.

  18. ADAPTIVE VALUE NETWORKS: Convergence of Emerging Tools, Technologies and Standards as Catalytic Drivers

    E-Print Network [OSTI]

    Datta, Shoumen

    2004-01-01

    Can we collapse information asymmetries and add value to networks or demand webs? Real-time operational adaptability is key,

  19. Visualizations for Real-time Pricing Demonstration

    SciTech Connect (OSTI)

    Marinovici, Maria C.; Hammerstrom, Janelle L.; Widergren, Steven E.; Dayley, Greg K.

    2014-10-13

    In this paper, the visualization tools created for monitoring the operations of a real-time pricing demonstration system that runs at a distribution feeder level are presented. The information these tools provide gives insights into demand behavior from automated price responsive devices, distribution feeder characteristics, impact of weather on system’s development, and other significant dynamics. Given the large number of devices that bid into a feeder-level real-time electricity market, new techniques are explored to summarize the present state of the system and contrast that with previous trends as well as future projections. To better understand the system behavior and correctly inform decision-making procedures, effective visualization of the data is imperative.

  20. Real time infrared aerosol analyzer

    DOE Patents [OSTI]

    Johnson, Stanley A. (Countryside, IL); Reedy, Gerald T. (Bourbonnais, IL); Kumar, Romesh (Naperville, IL)

    1990-01-01

    Apparatus for analyzing aerosols in essentially real time includes a virtual impactor which separates coarse particles from fine and ultrafine particles in an aerosol sample. The coarse and ultrafine particles are captured in PTFE filters, and the fine particles impact onto an internal light reflection element. The composition and quantity of the particles on the PTFE filter and on the internal reflection element are measured by alternately passing infrared light through the filter and the internal light reflection element, and analyzing the light through infrared spectrophotometry to identify the particles in the sample.

  1. Volatility of Power Grids Under Real-Time Pricing

    E-Print Network [OSTI]

    Roozbehani, Mardavij

    The paper proposes a framework for modeling and analysis of the dynamics of supply, demand, and clearing prices in power systems with real-time retail pricing and information asymmetry. Characterized by passing on the ...

  2. Arnold Schwarzenegger REAL-TIME GRID RELIABILITY

    E-Print Network [OSTI]

    Energy Research (PIER) California Energy Commission Beth Chambers Contract Manager Jamie Patterson (VSA) prototype to monitor system voltage conditions and provide real time dispatchers with reliabilityArnold Schwarzenegger Governor REAL-TIME GRID RELIABILITY MANAGEMENT California ISO Real

  3. Grids for the GiG and Real Time Simulations Geoffrey Fox, Alex Ho, Shrideep Pallickara, Marlon Pierce, Wenjun Wu

    E-Print Network [OSTI]

    Pallickara, Shrideep

    1 Grids for the GiG and Real Time Simulations Geoffrey Fox, Alex Ho, Shrideep Pallickara, Marlon and that of the Global Information Grid (GiG) with the Network Centric Operations and Warfare (NCOW) from the Department of Defense. We compare the GiG core enterprise services with those being developed for Grids (the Open Grid

  4. Convex Optimization: from Real-Time Embedded

    E-Print Network [OSTI]

    Convex Optimization: from Real-Time Embedded to Large-Scale Distributed Stephen Boyd Neal Parikh Lectures, UC Berkeley, 3/30/2015 1 #12;Outline Convex Optimization Real-Time Embedded Optimization Large-Scale Distributed Optimization Summary 2 #12;Outline Convex Optimization Real-Time Embedded Optimization Large

  5. Convex Optimization: from Real-Time Embedded

    E-Print Network [OSTI]

    Hall, Julian

    Convex Optimization: from Real-Time Embedded to Large-Scale Distributed Stephen Boyd Neal Parikh of Edinburgh, June 25 2014 1 #12;Outline Convex Optimization Real-Time Embedded Optimization Large-Scale Distributed Optimization Summary 2 #12;Outline Convex Optimization Real-Time Embedded Optimization Large

  6. Integration of Real-Time Data Into Building Automation Systems

    SciTech Connect (OSTI)

    Mark J. Stunder; Perry Sebastian; Brenda A. Chube; Michael D. Koontz

    2003-04-16

    The project goal was to investigate the possibility of using predictive real-time information from the Internet as an input to building management system algorithms. The objectives were to identify the types of information most valuable to commercial and residential building owners, managers, and system designers. To comprehensively investigate and document currently available electronic real-time information suitable for use in building management systems. Verify the reliability of the information and recommend accreditation methods for data and providers. Assess methodologies to automatically retrieve and utilize the information. Characterize equipment required to implement automated integration. Demonstrate the feasibility and benefits of using the information in building management systems. Identify evolutionary control strategies.

  7. Handheld portable real-time tracking and communications device

    DOE Patents [OSTI]

    Wiseman, James M. (Albuquerque, NM); Riblett, Jr., Loren E. (Edgewood, NM); Green, Karl L. (Albuquerque, NM); Hunter, John A. (Albuquerque, NM); Cook, III, Robert N. (Rio Rancho, NM); Stevens, James R. (Arlington, VA)

    2012-05-22

    Portable handheld real-time tracking and communications devices include; a controller module, communications module including global positioning and mesh network radio module, data transfer and storage module, and a user interface module enclosed in a water-resistant enclosure. Real-time tracking and communications devices can be used by protective force, security and first responder personnel to provide situational awareness allowing for enhance coordination and effectiveness in rapid response situations. Such devices communicate to other authorized devices via mobile ad-hoc wireless networks, and do not require fixed infrastructure for their operation.

  8. Real Time Voice Transmission Darshana Shah Real Time Voice transmission over Wireless medium using

    E-Print Network [OSTI]

    Yu, Chansu

    to 300+ MHz Receiver #12;Real Time Voice Transmission Darshana Shah - 3 - LFTX -- DC-30 MHz TransmitterReal Time Voice Transmission Darshana Shah - 1 - Real Time Voice transmission over Wireless medium Yu 06/07/2009 #12;Real Time Voice Transmission Darshana Shah - 2 - Abstract My project is to transmit

  9. Real-Time Computerized Annotation of Pictures Real-Time Computerized Annotation of Pictures

    E-Print Network [OSTI]

    Li, Jia

    Real-Time Computerized Annotation of Pictures Real-Time Computerized Annotation of Pictures Jia Li. Wang alipr.com #12;Real-Time Computerized Annotation of Pictures How Visible Are Web Images? Keukenhof photos Jia Li, James Z. Wang alipr.com #12;Real-Time Computerized Annotation of Pictures ALIPR: Automatic

  10. Use of environmental sensors and sensor networks to develop water and salinity budgets for seasonal wetland real-time water quality management

    SciTech Connect (OSTI)

    Quinn, N.W.T.; Ortega, R.; Rahilly, P.J.A,; Royer, C.W.

    2009-10-01

    Successful management of river salt loads in complex and highly regulated river basins such as the San Joaquin of California presents significant challenges to Information Technology. Models are used as means of simulating major hydrologic processes in the basin which affect water quality and can be useful as tools for organizing basin information in a structured and readily accessible manner. Models can also be used to extrapolate the results of system monitoring since it is impossible to collect data for every point and non-point source of a pollutant in the Basin. Fundamental to every model is the concept of mass balance. This paper describes the use of state-of-the-art sensor technologies deployed in concert to obtain the first water and salinity budgets for a 60,000 hectare tract of seasonally managed wetlands in the San Joaquin Basin of California.

  11. Using real-time truck transportation information to predict customer rejections and refrigeration-system fuel efficiency in packaged salad distribution

    E-Print Network [OSTI]

    Seminario, Carlos (Carlos Manuel Seminario Velarde)

    2011-01-01

    Companies that operate cold supply chains can greatly benefit from information availability and data generation. The abundance of information now available to cold chain operators and harvested from every echelon of the ...

  12. Prediction of traffic flow for real-time control 

    E-Print Network [OSTI]

    Chandrasekaran, Priya

    1998-01-01

    The prediction of traffic flow on a network and the relationship of these flows to the traffic control signal settings are major factors in the development of an adaptive real-time signal system. PASSER IV is an arterial system optimization package...

  13. Using Real-Time Road Traffic Data to Evaluate Congestion

    E-Print Network [OSTI]

    Cambridge, University of

    Using Real-Time Road Traffic Data to Evaluate Congestion Jean Bacon, Andrei Iu. Bejan, Alastair R regression, spline interpolation. 1 Introduction Congestion on roads, especially in urban areas, has a large kilometres in 2008 [2]. #12;Congestion can be tackled either by increasing road network capacity

  14. Real Time Grid Reliability Management 2005

    E-Print Network [OSTI]

    Eto, Joe

    2008-01-01

    Energy Management System (SCADA/EMS). In the long term, theadvanced real time control. SCADA is a category of softwareequipment and conditions. SCADA systems include hardware and

  15. A Real Time Operating System Survey What the heck is a Real Time system

    E-Print Network [OSTI]

    Groppi, Christopher

    A Real Time Operating System Survey John Ford 1 #12; What the heck is a Real Time system anyway.'' From POSIX 1003.1: ``Realtime in operating systems: the ability of the operating system to pro­ vide­Time Operating System) has to have a real­time kernel ffl Good documentation ffl Good device support ffl Good

  16. Real Time Search User Behavior Real time search is an increasingly important area of

    E-Print Network [OSTI]

    Jansen, James

    . The most frequently used terms accounted for only 0.03% of the total terms. Concerning search topics Web search. Searchers of real time content often repeat queries overtime, perhaps indicating long term content increasingly enters the main stream. Keywords Real time search, real time content, Collecta

  17. Real time sensor for therapeutic radiation delivery

    DOE Patents [OSTI]

    Bliss, Mary (West Richland, WA); Craig, Richard A. (West Richland, WA); Reeder, Paul L. (Richland, WA)

    1998-01-01

    The invention is a real time sensor for therapeutic radiation. A probe is placed in or near the patient that senses in real time the dose at the location of the probe. The strength of the dose is determined by either an insertion or an exit probe. The location is determined by a series of vertical and horizontal sensing elements that gives the operator a real time read out dose location relative to placement of the patient. The increased accuracy prevents serious tissue damage to the patient by preventing overdose or delivery of a dose to a wrong location within the body.

  18. Real time sensor for therapeutic radiation delivery

    DOE Patents [OSTI]

    Bliss, M.; Craig, R.A.; Reeder, P.L.

    1998-01-06

    The invention is a real time sensor for therapeutic radiation. A probe is placed in or near the patient that senses in real time the dose at the location of the probe. The strength of the dose is determined by either an insertion or an exit probe. The location is determined by a series of vertical and horizontal sensing elements that gives the operator a real time read out dose location relative to placement of the patient. The increased accuracy prevents serious tissue damage to the patient by preventing overdose or delivery of a dose to a wrong location within the body. 14 figs.

  19. Real time PCR measurement by fluorescence anisotropy

    E-Print Network [OSTI]

    Crane, Bryan Lee, 1976-

    2005-01-01

    Real-time polymerase chain reaction (PCR) is the gold-standard for quantitation in both mutation and gene expression analyses. Already this technique has found valuable clinical application in disease diagnosis and progression ...

  20. REAL TIME SYSTEM OPERATIONS 2006-2007

    E-Print Network [OSTI]

    Eto, Joseph H.

    2008-01-01

    for grid topology changes (implying online  security and Security Constrained Economic Dispatch (SCED) procedures.   Built upon GRID-grid, reliability, real?time operator tools, time synchronized phasor  measurements, voltage security.  

  1. Myrinet Real Time Protocol with flexible routing 

    E-Print Network [OSTI]

    Kini, Savita

    1998-01-01

    Real Time communication relies on resource reservation ics. along the path of the connection for performance guarantees, typically in terms of bounded delays. A fully distributed admission control scheme for resource allocation in real...

  2. Property:Real-Time | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS Report Url Jump to:Programmable WavemakingPurchasers Jump

  3. Continuous, real time microwave plasma element sensor

    DOE Patents [OSTI]

    Woskov, P.P.; Smatlak, D.L.; Cohn, D.R.; Wittle, J.K.; Titus, C.H.; Surma, J.E.

    1995-12-26

    Microwave-induced plasma is described for continuous, real time trace element monitoring under harsh and variable conditions. The sensor includes a source of high power microwave energy and a shorted waveguide made of a microwave conductive, refractory material communicating with the source of the microwave energy to generate a plasma. The high power waveguide is constructed to be robust in a hot, hostile environment. It includes an aperture for the passage of gases to be analyzed and a spectrometer is connected to receive light from the plasma. Provision is made for real time in situ calibration. The spectrometer disperses the light, which is then analyzed by a computer. The sensor is capable of making continuous, real time quantitative measurements of desired elements, such as the heavy metals lead and mercury. 3 figs.

  4. Continuous, real time microwave plasma element sensor

    DOE Patents [OSTI]

    Woskov, Paul P. (4 Ledgewood Dr., Bedford, MA 01730); Smatlak, Donna L. (10 Village Hill Rd., Belmont, MA 02178); Cohn, Daniel R. (26 Walnut Hill Rd., Chestnut Hill, MA 02167); Wittle, J. Kenneth (1740 Conestoga Rd., Chester Springs, PA 19425); Titus, Charles H. (323 Echo Valley La., Newton Square, PA 19072); Surma, Jeffrey E. (806 Brian La., Kennewick, WA 99337)

    1995-01-01

    Microwave-induced plasma for continuous, real time trace element monitoring under harsh and variable conditions. The sensor includes a source of high power microwave energy and a shorted waveguide made of a microwave conductive, refractory material communicating with the source of the microwave energy to generate a plasma. The high power waveguide is constructed to be robust in a hot, hostile environment. It includes an aperture for the passage of gases to be analyzed and a spectrometer is connected to receive light from the plasma. Provision is made for real time in situ calibration. The spectrometer disperses the light, which is then analyzed by a computer. The sensor is capable of making continuous, real time quantitative measurements of desired elements, such as the heavy metals lead and mercury.

  5. 9th Real-Time Systems Symposium Huntsville, Alabama, pp. 191-200, December 1988.

    E-Print Network [OSTI]

    Tamir, Yuval

    9th Real-Time Systems Symposium Huntsville, Alabama, pp. 191-200, December 1988. SUPPORT FOR HIGH; in a large network some This research is supported by Rockwell International and the State of California

  6. Getting Useful Real-Time Feedback About Your Program | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Getting Useful Real-Time Feedback About Your Program Getting Useful Real-Time Feedback About Your Program Getting Useful Real-Time Feedback About Your Program, presentation slides...

  7. National Spherical Torus Experiment (NSTX) Power Supply Real Time Controller

    E-Print Network [OSTI]

    depends on a real time, high speed, synchronous, and deterministic control system acting on a system Generator" (FG). Each PSS Magnets Power Supply System Plasma Power Supply Real Time Control Plasma Real Time

  8. Networks, Information andNetworks, Information and Information Worker ProductivityInformation Worker Productivity

    E-Print Network [OSTI]

    Reif, Rafael

    Yahoo! - July 28, 2006 © 2006 All Rights Reserved Information and Non-Information Work1 Networks, Information andNetworks, Information and Information Worker ProductivityInformationEmployment Source: Wolff (2005) Information Work Non - Information Work 70% of labor force; 60% of GDP of US (Apte

  9. Glyph-Based Generic Network Visualization Robert F. Erbacher

    E-Print Network [OSTI]

    Erbacher, Robert F.

    for constant real-time monitoring of the network environment. Keywords: Information Visualization, Computer monitoring environment. The need for intrusion detection monitoring should be clear. Traffic monitoring network for their livelihood. Network managers and system administrators must monitor activity

  10. Real Time Tailpipe Emission Measurements | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Real Time Tailpipe Emission Measurements 2002 DEER Conference Presentation: Brookhaven National Laboratory 2002deerimre.pdf More Documents & Publications Real-Time...

  11. Steps to Establish a Real-Time Transmission Monitoring System...

    Energy Savers [EERE]

    Steps to Establish a Real-Time Transmission Monitoring System for Transmission Owners and Operators within the Eastern and Western Interconnections Steps to Establish a Real-Time...

  12. DOE Announces Webinars on Real Time Energy Management, Solar...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Real Time Energy Management, Solar Forecasting Metrics, and More DOE Announces Webinars on Real Time Energy Management, Solar Forecasting Metrics, and More January 31, 2014 -...

  13. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Real-Time Chemical Imaging of Bacterial Biofilm Development Real-Time Chemical Imaging of Bacterial Biofilm Development Print Wednesday, 25 August 2010 00:00 Scientists have...

  14. Time Extraction from Real-time Generated Football Reports Markus Borg

    E-Print Network [OSTI]

    Time Extraction from Real-time Generated Football Reports Markus Borg D02, Lund Institute information from football match reports generated through minute- by-minute reporting. By using regular ex is presented. 1 Introduction Football reports written in real-time is an increas- ingly popular way to report

  15. Real time gamma-ray signature identifier

    DOE Patents [OSTI]

    Rowland, Mark (Alamo, CA); Gosnell, Tom B. (Moraga, CA); Ham, Cheryl (Livermore, CA); Perkins, Dwight (Livermore, CA); Wong, James (Dublin, CA)

    2012-05-15

    A real time gamma-ray signature/source identification method and system using principal components analysis (PCA) for transforming and substantially reducing one or more comprehensive spectral libraries of nuclear materials types and configurations into a corresponding concise representation/signature(s) representing and indexing each individual predetermined spectrum in principal component (PC) space, wherein an unknown gamma-ray signature may be compared against the representative signature to find a match or at least characterize the unknown signature from among all the entries in the library with a single regression or simple projection into the PC space, so as to substantially reduce processing time and computing resources and enable real-time characterization and/or identification.

  16. Volatility of Power Grids under Real-Time Pricing

    E-Print Network [OSTI]

    Roozbehani, Mardavij; Mitter, Sanjoy K

    2011-01-01

    The paper proposes a framework for modeling and analysis of the dynamics of supply, demand, and clearing prices in power system with real-time retail pricing and information asymmetry. Real-time retail pricing is characterized by passing on the real-time wholesale electricity prices to the end consumers, and is shown to create a closed-loop feedback system between the physical layer and the market layer of the power system. In the absence of a carefully designed control law, such direct feedback between the two layers could increase volatility and lower the system's robustness to uncertainty in demand and generation. A new notion of generalized price-elasticity is introduced, and it is shown that price volatility can be characterized in terms of the system's maximal relative price elasticity, defined as the maximal ratio of the generalized price-elasticity of consumers to that of the producers. As this ratio increases, the system becomes more volatile, and eventually, unstable. As new demand response technolo...

  17. Real-Time Demand Side Energy Management 

    E-Print Network [OSTI]

    Victor, A.; Brodkorb, M.

    2006-01-01

    • Provides periodic energy consumption reports Demand-Side Energy Management • Compares actual energy cost against defined dynamic targets • Alerts responsible personnel when corrective action is needed • Provides a list of recommended actions... stream_source_info ESL-IE-06-05-24.pdf.txt stream_content_type text/plain stream_size 17485 Content-Encoding UTF-8 stream_name ESL-IE-06-05-24.pdf.txt Content-Type text/plain; charset=UTF-8 Real-Time Demand Side Energy...

  18. Real-time inclinometer using accelerometer MEMS

    E-Print Network [OSTI]

    Hanto, D; Hermanto, B; Puranto, P; Handoko, L T

    2011-01-01

    A preliminary design of inclinometer for real-time monitoring system of soil displacement is proposed. The system is developed using accelerometer sensor with microelectromechanical system (MEMS) device. The main apparatus consists of a single MEMS sensor attached to a solid pipe and stucked pependicularly far away below the soil surface. The system utilizes small fractions of electrical signals from MEMS sensor induced by the pipe inclination due to soil displacements below the surface. It is argued that the system is accurate enough to detect soil displacements responsible for landslides, and then realizes a simple and low cost landslide early warning system.

  19. Real-time individualized training vectors for experiential learning.

    SciTech Connect (OSTI)

    Willis, Matt; Tucker, Eilish Marie; Raybourn, Elaine Marie; Glickman, Matthew R.; Fabian, Nathan

    2011-01-01

    Military training utilizing serious games or virtual worlds potentially generate data that can be mined to better understand how trainees learn in experiential exercises. Few data mining approaches for deployed military training games exist. Opportunities exist to collect and analyze these data, as well as to construct a full-history learner model. Outcomes discussed in the present document include results from a quasi-experimental research study on military game-based experiential learning, the deployment of an online game for training evidence collection, and results from a proof-of-concept pilot study on the development of individualized training vectors. This Lab Directed Research & Development (LDRD) project leveraged products within projects, such as Titan (Network Grand Challenge), Real-Time Feedback and Evaluation System, (America's Army Adaptive Thinking and Leadership, DARWARS Ambush! NK), and Dynamic Bayesian Networks to investigate whether machine learning capabilities could perform real-time, in-game similarity vectors of learner performance, toward adaptation of content delivery, and quantitative measurement of experiential learning.

  20. General schedulability bound analysis and its applications in real-time systems 

    E-Print Network [OSTI]

    Wu, Jianjia

    2007-09-17

    Real-time system refers to the computing, communication, and information system with deadline requirements. To meet these deadline requirements, most systems use a mechanism known as the schedulability test which determines ...

  1. Real-time applications of neural nets

    SciTech Connect (OSTI)

    Spencer, J.E.

    1989-05-01

    Producing, accelerating and colliding very high power, low emittance beams for long periods is a formidable problem in real-time control. As energy has grown exponentially in time so has the complexity of the machines and their control systems. Similar growth rates have occurred in many areas, e.g., improved integrated circuits have been paid for with comparable increases in complexity. However, in this case, reliability, capability and cost have improved due to reduced size, high production and increased integration which allow various kinds of feedback. In contrast, most large complex systems (LCS) are perceived to lack such possibilities because only one copy is made. Neural nets, as a metaphor for LCS, suggest ways to circumvent such limitations. It is argued that they are logically equivalent to multi-loop feedback/forward control of faulty systems. While complimentary to AI, they mesh nicely with characteristics desired for real-time systems. Such issues are considered, examples given and possibilities discussed. 21 refs., 6 figs.

  2. Real Time Simulation of Power Grid Disruptions

    SciTech Connect (OSTI)

    Chinthavali, Supriya; Dimitrovski, Aleksandar D; Fernandez, Steven J; Groer, Christopher S; Nutaro, James J; Olama, Mohammed M; Omitaomu, Olufemi A; Shankar, Mallikarjun; Spafford, Kyle L; Vacaliuc, Bogdan

    2012-11-01

    DOE-OE and DOE-SC workshops (Reference 1-3) identified the key power grid problem that requires insight addressable by the next generation of exascale computing is coupling of real-time data streams (1-2 TB per hour) as the streams are ingested to dynamic models. These models would then identify predicted disruptions in time (2-4 seconds) to trigger the smart grid s self healing functions. This project attempted to establish the feasibility of this approach and defined the scientific issues, and demonstrated example solutions to important smart grid simulation problems. These objectives were accomplished by 1) using the existing frequency recorders on the national grid to establish a representative and scalable real-time data stream; 2) invoking ORNL signature identification algorithms; 3) modeling dynamically a representative region of the Eastern interconnect using an institutional cluster, measuring the scalability and computational benchmarks for a national capability; and 4) constructing a prototype simulation for the system s concept of smart grid deployment. The delivered ORNL enduring capability included: 1) data processing and simulation metrics to design a national capability justifying exascale applications; 2) Software and intellectual property built around the example solutions; 3) demonstrated dynamic models to design few second self-healing.

  3. Real-Time damage localization by means of MEMS sensors and use of wireless data transmission

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    . INTRODUCTION Urban water delivery network systems, particularly the underground components such as pipeline networks, can be damaged due to earthquakes, pipe corrosion, severely cold weather, heavy traffic load WORK In recent years, real-time damage assessment and diagnosis of buried pipelines has attracted much

  4. Ames Lab 101: Real-Time 3D Imaging

    ScienceCinema (OSTI)

    Zhang, Song

    2012-08-29

    Ames Laboratory scientist Song Zhang explains his real-time 3-D imaging technology. The technique can be used to create high-resolution, real-time, precise, 3-D images for use in healthcare, security, and entertainment applications.

  5. Real-time Volumetric Deformable Models for Surgery Simulation using

    E-Print Network [OSTI]

    Real-time Volumetric Deformable Models for Surgery Simulation using Finite Elements volumetric Finite Element models to surgery simulation. In particular it presents three new approaches: Virtual Surgery, Real-Time Deformation, Solid Volumetric Deformable Mod- els, Virtual Reality, Finite

  6. In-line real time air monitor

    DOE Patents [OSTI]

    Wise, Marcus B. (Kingston, TN); Thompson, Cyril V. (Knoxville, TN)

    1998-01-01

    An in-line gas monitor capable of accurate gas composition analysis in a continuous real time manner even under strong applied vacuum conditions operates by mixing an air sample with helium forming a sample gas in two complementary sample loops embedded in a manifold which includes two pairs of 3-way solenoid valves. The sample gas is then analyzed in an ion trap mass spectrometer on a continuous basis. Two valve drivers actuate the two pairs of 3-way valves in a reciprocating fashion, so that there is always flow through the in-line gas monitor via one or the other of the sample loops. The duty cycle for the two pairs of 3-way valves is varied by tuning the two valve drivers to a duty cycle typically between 0.2 to 0.7 seconds.

  7. In-line real time air monitor

    DOE Patents [OSTI]

    Wise, M.B.; Thompson, C.V.

    1998-07-14

    An in-line gas monitor capable of accurate gas composition analysis in a continuous real time manner even under strong applied vacuum conditions operates by mixing an air sample with helium forming a sample gas in two complementary sample loops embedded in a manifold which includes two pairs of 3-way solenoid valves. The sample gas is then analyzed in an ion trap mass spectrometer on a continuous basis. Two valve drivers actuate the two pairs of 3-way valves in a reciprocating fashion, so that there is always flow through the in-line gas monitor via one or the other of the sample loops. The duty cycle for the two pairs of 3-way valves is varied by tuning the two valve drivers to a duty cycle typically between 0.2 to 0.7 seconds. 3 figs.

  8. Real time speech formant analyzer and display

    DOE Patents [OSTI]

    Holland, G.E.; Struve, W.S.; Homer, J.F.

    1987-02-03

    A speech analyzer for interpretation of sound includes a sound input which converts the sound into a signal representing the sound. The signal is passed through a plurality of frequency pass filters to derive a plurality of frequency formants. These formants are converted to voltage signals by frequency-to-voltage converters and then are prepared for visual display in continuous real time. Parameters from the inputted sound are also derived and displayed. The display may then be interpreted by the user. The preferred embodiment includes a microprocessor which is interfaced with a television set for displaying of the sound formants. The microprocessor software enables the sound analyzer to present a variety of display modes for interpretive and therapeutic used by the user. 19 figs.

  9. Real-time capable first principle based modelling of tokamak turbulent transport

    E-Print Network [OSTI]

    Breton, S; Felici, F; Imbeaux, F; Aniel, T; Artaud, J F; Baiocchi, B; Bourdelle, C; Camenen, Y; Garcia, J

    2015-01-01

    A real-time capable core turbulence tokamak transport model is developed. This model is constructed from the regularized nonlinear regression of quasilinear gyrokinetic transport code output. The regression is performed with a multilayer perceptron neural network. The transport code input for the neural network training set consists of five dimensions, and is limited to adiabatic electrons. The neural network model successfully reproduces transport fluxes predicted by the original quasilinear model, while gaining five orders of magnitude in computation time. The model is implemented in a real-time capable tokamak simulator, and simulates a 300s ITER discharge in 10s. This proof-of-principle for regression based transport models anticipates a significant widening of input space dimensionality and physics realism for future training sets. This aims to provide unprecedented computational speed coupled with first-principle based physics for real-time control and integrated modelling applications.

  10. REAL-TIME WATER WAVES WITH WAVE PARTICLES

    E-Print Network [OSTI]

    Keyser, John

    REAL-TIME WATER WAVES WITH WAVE PARTICLES A Dissertation by Cem Yuksel Submitted to the Office of DOCTOR OF PHILOSOPHY August 2010 Major Subject: Computer Science #12;REAL-TIME WATER WAVES WITH WAVE, Valerie E. Taylor August 2010 Major Subject: Computer Science #12;iii ABSTRACT Real-time Water Waves

  11. Achieving Real-time Mode Estimation through Offline Compilation

    E-Print Network [OSTI]

    Achieving Real-time Mode Estimation through Offline Compilation by John M. Van Eepoel B, Committee on Graduate Students #12;Achieving Real-time Mode Estimation through Offline Compilation2 This page intentionally left blank. #12;Achieving Real-time Mode Estimation through Offline Compilation 3

  12. Real Time PMU-Based Stability Monitoring Final Project Report

    E-Print Network [OSTI]

    Real Time PMU-Based Stability Monitoring Final Project Report Power Systems Engineering Research Center Empowering Minds to Engineer the Future Electric Energy System #12;#12;Real Time PMU for the Power Systems Engineering Research Center (PSERC) research project titled "Real Time PMU-based Stability

  13. Optimizing near real time accountability for reprocessing.

    SciTech Connect (OSTI)

    Cipiti, Benjamin B.

    2010-06-01

    Near Real Time Accountability (NRTA) of actinides at high precision in reprocessing plants has been a long sought-after goal in the safeguards community. Achieving this goal is hampered by the difficulty of making precision measurements in the reprocessing environment, equipment cost, and impact to plant operations. Thus the design of future reprocessing plants requires an optimization of different approaches. The Separations and Safeguards Performance Model, developed at Sandia National Laboratories, was used to evaluate a number of NRTA strategies in a UREX+ reprocessing plant. Strategies examined include the incorporation of additional actinide measurements of internal plant vessels, more use of process monitoring data, and the option of periodic draining of inventory to key tanks. Preliminary results show that the addition of measurement technologies can increase the overall measurement uncertainty due to additional error propagation, so care must be taken when designing an advanced system. Initial results also show that relying on a combination of different NRTA techniques will likely be the best option. The model provides a platform for integrating all the data. The modeling results for the different NRTA options under various material loss conditions will be presented.

  14. Real Time Grid Reliability Management 2005

    E-Print Network [OSTI]

    Eto, Joe

    2008-01-01

    Office of Electric Transmission and Distribution, U.S.System SDG&E’s electric transmission network is comprised ofGas and Electric Technical Advisory Committee Transmission

  15. Real Time Grid Reliability Management 2005

    E-Print Network [OSTI]

    Eto, Joe

    2008-01-01

    into the WECC Phasor Network PMU Location 1. Slatt 2. SummerPhasor Measurement Unit (PMU) Installation Process and Costprepared and delivered a PMU Measurement Unit Installation

  16. REAL TIME ULTRASONIC ALUMINUM SPOT WELD MONITORING SYSTEM

    SciTech Connect (OSTI)

    Regalado, W. Perez; Chertov, A. M.; Maev, R. Gr. [Institute for Diagnostic Imaging Research, Physics Department, University of Windsor, 292 Essex Hall, 401 Sunset Ave. N9B 3P4 Windsor, Ontario (Canada)

    2010-02-22

    Aluminum alloys pose several properties that make them one of the most popular engineering materials: they have excellent corrosion resistance, and high weight-to-strength ratio. Resistance spot welding of aluminum alloys is widely used today but oxide film and aluminum thermal and electrical properties make spot welding a difficult task. Electrode degradation due to pitting, alloying and mushrooming decreases the weld quality and adjustment of parameters like current and force is required. To realize these adjustments and ensure weld quality, a tool to measure weld quality in real time is required. In this paper, a real time ultrasonic non-destructive evaluation system for aluminum spot welds is presented. The system is able to monitor nugget growth while the spot weld is being made. This is achieved by interpreting the echoes of an ultrasound transducer located in one of the welding electrodes. The transducer receives and transmits an ultrasound signal at different times during the welding cycle. Valuable information of the weld quality is embedded in this signal. The system is able to determine the weld nugget diameter by measuring the delays of the ultrasound signals received during the complete welding cycle. The article presents the system performance on aluminum alloy AA6022.

  17. Development of Real-Time Coal Monitoring Instrument

    SciTech Connect (OSTI)

    Rajan Gurjar, Ph.D.

    2010-06-17

    Relying on coal for energy requires optimizing the extraction of heat content from various blends of coal fuel and reducing harmful constituents and byproducts. Having a real-time measurement instrument provides relevant information about toxic constituents released in the atmosphere from burning coal and optimizes the performance of a power plant. A few commercial instruments exist and have been in operation for more than a decade. However, most of these instruments are based on radioactive sources and are bulky, expensive and time-consuming. The proposed instrument is based on the Laser Induced Breakdown Spectroscopy (LIBS). The advantage of LIBS is that it is a standoff instrument, does not require sample preparation and provides precise information about sample constituents.

  18. Real-Time SCADA Cyber Protection Using Compression Techniques

    SciTech Connect (OSTI)

    Lyle G. Roybal; Gordon H Rueff

    2013-11-01

    The Department of Energy’s Office of Electricity Delivery and Energy Reliability (DOE-OE) has a critical mission to secure the energy infrastructure from cyber attack. Through DOE-OE’s Cybersecurity for Energy Delivery Systems (CEDS) program, the Idaho National Laboratory (INL) has developed a method to detect malicious traffic on Supervisory, Control, and Data Acquisition (SCADA) network using a data compression technique. SCADA network traffic is often repetitive with only minor differences between packets. Research performed at the INL showed that SCADA network traffic has traits desirable for using compression analysis to identify abnormal network traffic. An open source implementation of a Lempel-Ziv-Welch (LZW) lossless data compression algorithm was used to compress and analyze surrogate SCADA traffic. Infected SCADA traffic was found to have statistically significant differences in compression when compared against normal SCADA traffic at the packet level. The initial analyses and results are clearly able to identify malicious network traffic from normal traffic at the packet level with a very high confidence level across multiple ports and traffic streams. Statistical differentiation between infected and normal traffic level was possible using a modified data compression technique at the 99% probability level for all data analyzed. However, the conditions tested were rather limited in scope and need to be expanded into more realistic simulations of hacking events using techniques and approaches that are better representative of a real-world attack on a SCADA system. Nonetheless, the use of compression techniques to identify malicious traffic on SCADA networks in real time appears to have significant merit for infrastructure protection.

  19. REAL TIME SYSTEM OPERATIONS 2006-2007

    E-Print Network [OSTI]

    Eto, Joseph H.

    2008-01-01

    Adaptive AR Model Based on PMU,” IEEE/PES Transmission and phasor measurement unit (PMU)  measurements to improve the by incorporating PG&E’s PMU  measurements into the network 

  20. A real-time GIS for the analysis of a traffic system C. Claramunt, E. Peytchev and A. Bargiela

    E-Print Network [OSTI]

    Bargiela, Andrzej

    A real-time GIS for the analysis of a traffic system C. Claramunt, E. Peytchev and A. Bargiela describes a prototype development of a new system for the integration of real-time traffic data within a GIS in which systems are designed and used in many application fields. Geographical Information Systems (GIS

  1. Real Time Video Scene Detection and Classification John M. Gauch, Susan Gauch, Sylvain Bouix, Xiaolan Zhu

    E-Print Network [OSTI]

    Kansas, University of

    Real Time Video Scene Detection and Classification John M. Gauch, Susan Gauch, Sylvain Bouix (Video Indexing for Searching Over Networks) digital video library system has been developed in our to provide access to video footage within seconds of broadcast, we have developed a new pipelined digital

  2. Improving Building Performance at Urban Scale with a Framework for Real-time Data Sharing

    SciTech Connect (OSTI)

    Pang, Xiufeng; Hong, Tianzhen; Piette, Mary Ann

    2013-06-03

    This paper describes work in progress toward an urban-scale system aiming to reduce energy use in neighboring buildings by providing three components: a database for accessing past and present weather data from high quality weather stations; a network for communicating energy-saving strategies between building owners; and a set of modeling tools for real-time building energy simulation.

  3. QoS-Sensitive Transport of Real-Time MPEG Video using Adaptive Redundancy Control 1

    E-Print Network [OSTI]

    Park, Kihong

    QoS-Sensitive Transport of Real-Time MPEG Video using Adaptive Redundancy Control 1 Kihong Park a;2, IN 47907, USA Abstract This paper presents an adaptive end-to-end protocol for quality of service for adverse network e#11;ects so as to maintain an invariant level of end-to-end QoS. We describe an adaptive

  4. Quality-of-Information Aware Networking for Tactical Military Networks

    E-Print Network [OSTI]

    Yener, Aylin

    for a required quality of information when selecting information sources, transporting information through the need for a general, but formal, definition of quality- of-information so that this metric may of Information (QoI)-aware networking that seeks to model the network as an information source and directly

  5. Towards a Real-time Transient Classification Engine

    SciTech Connect (OSTI)

    Nugent, Peter E; Bloom, Josh; Starr, Dan; Butler, Nat; Nugent, Peter; Rischard, M.; Eads, D.; Poznanski, Dovi

    2008-02-22

    Temporal sampling does more than add another axis to the vector of observables. Instead, under the recognition that how objects change (and move) in time speaks directly to the physics underlying astronomical phenomena, next-generation wide-field synoptic surveys are poised to revolutionize our understanding of just about anything that goes bump in the night (which is just about everything at some level). Still, even the most ambitious surveys will require targeted spectroscopic follow-up to fill in the physical details of newly discovered transients. We are now building a new system intended to ingest and classify transient phenomena in near real-time from high-throughput imaging data streams. Described herein, the Transient Classification Project at Berkeley will be making use of classification techniques operating on"features" extracted from time series and contextual (static) information. We also highlight the need for a community adoption of a standard representation of astronomical time series data (i.e.,"VOTimeseries").

  6. Real-Time Measurement of Diesel Trap Efficiency | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Measurement of Diesel Trap Efficiency Real-Time Measurement of Diesel Trap Efficiency 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters...

  7. Microwave Plasma Monitoring System For Real-Time Elemental Analysis

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    System Microwave Plasma Monitoring System For Real-Time Elemental Analysis The invention apparatus can also be used to monitor for the presence of halogens, sulfur and...

  8. Real-Time Simultaneous Measurements of Size, Density, and Composition...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Simultaneous Measurements of Size, Density, and Composition of Single Ultrafine Diesel Tailpipe Particles Real-Time Simultaneous Measurements of Size, Density, and Composition of...

  9. Optimization Online - Stochastic Real-Time Scheduling of Wind ...

    E-Print Network [OSTI]

    Alireza Soroudi

    2015-01-03

    Jan 3, 2015 ... Stochastic Real-Time Scheduling of Wind-thermal Generation Units in an Electric Utility. Alireza Soroudi (alireza.soroudi ***at*** ucd.ie)

  10. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    has led to unprecedented study of dynamic processes. The ability to image the chemical reactions in living cells in real time, especially in parallel with fluorescence...

  11. Tracking Living Cells as They Differentiate in Real Time

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    protein phosphorylation inside living mammalian cells, enabling them to follow cellular chemical changes in real time, without bias. Advancing Medicine with Infrared Light...

  12. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Real-Time Chemical Imaging of Bacterial Biofilm Development Print Scientists have developed a robust and label-free method to probe the chemical underpinnings of developing...

  13. DEZENT: Autonomous Real-Time Management of

    E-Print Network [OSTI]

    Morik, Katharina

    Science College of Electrical Engineering University of Dortmund 44221 Dortmund / Germany 1 This work, electronic negotiations, electric power distribution and management 1. Introduction Rising market prices for feeding electric power from re- newable sources into the public network. Wind or solar power production

  14. Architectures for Hard Real-Time

    E-Print Network [OSTI]

    Ungerer, Theo

    Uhrig, Theo Ungerer1 Systems and Networking, University of Augsburg, Eichleitnerstr. 30, D-86159 of WCET 1 E-mail: {gerdes, wolf, zhang, uhrig, ungerer}@informatik.uni-augsburg.de 2 Multi-Core Execution international s.r.o. 2 Project work at University of Augsburg At University of Augsburg the main objectives

  15. Real Time Flux Control in PM Motors

    SciTech Connect (OSTI)

    Otaduy, P.J.

    2005-09-27

    Significant research at the Oak Ridge National Laboratory (ORNL) Power Electronics and Electric Machinery Research Center (PEEMRC) is being conducted to develop ways to increase (1) torque, (2) speed range, and (3) efficiency of traction electric motors for hybrid electric vehicles (HEV) within existing current and voltage bounds. Current is limited by the inverter semiconductor devices' capability and voltage is limited by the stator wire insulation's ability to withstand the maximum back-electromotive force (emf), which occurs at the upper end of the speed range. One research track has been to explore ways to control the path and magnitude of magnetic flux while the motor is operating. The phrase, real time flux control (RTFC), refers to this mode of operation in which system parameters are changed while the motor is operating to improve its performance and speed range. RTFC has potential to meet an increased torque demand by introducing additional flux through the main air gap from an external source. It can augment the speed range by diverting flux away from the main air gap to reduce back-emf at high speeds. Conventional RTFC technology is known as vector control [1]. Vector control decomposes the stator current into two components; one that produces torque and a second that opposes (weakens) the magnetic field generated by the rotor, thereby requiring more overall stator current and reducing the efficiency. Efficiency can be improved by selecting a RTFC method that reduces the back-emf without increasing the average current. This favors methods that use pulse currents or very low currents to achieve field weakening. Foremost in ORNL's effort to develop flux control is the work of J. S. Hsu. Early research [2,3] introduced direct control of air-gap flux in permanent magnet (PM) machines and demonstrated it with a flux-controlled generator. The configuration eliminates the problem of demagnetization because it diverts all the flux from the magnets instead of trying to oppose it. It is robust and could be particularly useful for PM generators and electric vehicle drives. Recent efforts have introduced a brushless machine that transfers a magneto-motive force (MMF) generated by a stationary excitation coil to the rotor [4]. Although a conventional PM machine may be field weakened using vector control, the air-gap flux density cannot be effectively enhanced. In Hsu's new machine, the magnetic field generated by the rotor's PM may be augmented by the field from the stationery excitation coil and channeled with flux guides to its desired destination to enhance the air-gap flux that produces torque. The magnetic field can also be weakened by reversing the current in the stationary excitation winding. A patent for advanced technology in this area is pending. Several additional RTFC methods have been discussed in open literature. These include methods of changing the number of poles by magnetizing and demagnetizing the magnets poles with pulses of current corresponding to direct-axis (d-axis) current of vector control [5,6], changing the number of stator coils [7], and controlling the air gap [8]. Test experience has shown that the magnet strengths may vary and weaken naturally as rotor temperature increases suggesting that careful control of the rotor temperature, which is no easy task, could yield another method of RTFC. The purpose of this report is to (1) examine the interaction of rotor and stator flux with regard to RTFC, (2) review and summarize the status of RTFC technology, and (3) compare and evaluate methods for RTFC with respect to maturity, advantages and limitations, deployment difficulty and relative complexity.

  16. Strategic Management for Real-Time Business Intelligence

    E-Print Network [OSTI]

    Palpanas, Themis

    Strategic Management for Real-Time Business Intelligence Konstantinos Zoumpatianos, Themis Palpanas directions. 1 Introduction Strategic Management (SM) is concerned with the continuous evaluation and control-Verlag Berlin Heidelberg 2013 #12;Strategic Management for Real-Time Business Intelligence 119 occur and keep

  17. Author's personal copy GPU based real-time instrument tracking

    E-Print Network [OSTI]

    Author's personal copy GPU based real-time instrument tracking with three-dimensional ultrasound q April 2007; accepted 4 June 2007 Available online 5 July 2007 Abstract Real-time three-dimensional ultrasound enables new intracardiac surgical procedures, but the distorted appearance of instruments

  18. Real-time Remote Sensing of Snowmobiles Emissions at

    E-Print Network [OSTI]

    Denver, University of

    Real-time Remote Sensing of Snowmobiles Emissions at Yellowstone National Park: An Oxygenated Fuel 68509 #12;Real-time Remote Sensing of Snowmobile Emissions at Yellowstone National Park 2 Executive emissions from snowmobiles. Ratios of CO, HC and toluene to CO2 were measured and used to calculate %CO, %HC

  19. The Future of Real-time Cardiac Magnetic Resonance Imaging

    E-Print Network [OSTI]

    Southern California, University of

    Address *Electrical Engineering-Systems, 3740 McClintock Avenue, EEB 406, University of Southern. These and other factors require real-time imaging. Magnetic resonance imaging (MRI) is a powerful and flexible with excellent image quality. In this article, the term real-time refers to imaging sys- tems that acquire

  20. Real-Time Task Scheduling under Thermal Constraints 

    E-Print Network [OSTI]

    Ahn, Youngwoo

    2010-10-12

    periodic tasks and non-real-time, but latency-sensitive, aperiodic jobs. We first introduce the Transient Overclocking Server, which safely reduces the response time of aperiodic jobs in the presence of hard real-time periodic tasks and thermal constraints...

  1. Utility Accrual Real-Time Scheduling for Multiprocessor Embedded Systems

    E-Print Network [OSTI]

    Ravindran, Binoy

    Utility Accrual Real-Time Scheduling for Multiprocessor Embedded Systems Hyeonjoong Cho a Binoy We present the first Utility Accrual (or UA) real-time scheduling algorithm for mul- tiprocessors, called global Multiprocessor Utility Accrual scheduling algorithm (or gMUA). The algorithm considers

  2. Real-Time Plasma Control Tools for Advanced Tokamak Operation

    SciTech Connect (OSTI)

    Varandas, C. A. F.; Sousa, J.; Rodrigues, A. P.; Carvalho, B. B.; Fernandes, H.; Batista, A. J.; Cruz, N.; Combo, A.; Pereira, R. C. [Centro de FuSao Nuclear, Associacao Euratom/IST, Instituto Superior Tecnico, Av. Rovisco Pais, P-1049-001 Lisbon (Portugal)

    2006-12-04

    Real-time control will play an important role in the operation and scientific exploitation of the new generation fusion devices. This paper summarizes the real-time systems and diagnostics developed by the Portuguese Fusion Euratom Association based on digital signal processors and field programmable gate arrays.

  3. Real Time Pedestrian Tracking using Thermal Infrared Imagery

    E-Print Network [OSTI]

    Del Moral , Pierre

    Real Time Pedestrian Tracking using Thermal Infrared Imagery Jianfu Li 1. Key Laboratory@cqu.edu.cn Abstract--In the study, a real time pedestrian tracking algortithm is presented using thermal infrared imagery. It makes use of the characteristics of pedestrian body regions in infrared images, which is based

  4. Hyper-Real-Time Ice Simulation and Modeling Using GPGPU

    E-Print Network [OSTI]

    Peters, Dennis

    Hyper-Real-Time Ice Simulation and Modeling Using GPGPU By c Shadi Alawneh, B. Eng., M. Eng's, Newfoundland Title: Hyper-Real-Time Ice Simulation and Modeling Using GPGPU Author: Shadi Alawneh, B. Eng operating in pack ice is a computationally in- tensive process to which General Purpose Computing

  5. Bayesian based design of real-time sensor systems for high-risk indoor contaminants

    SciTech Connect (OSTI)

    Sreedharan, Priya; Sreedharan, Priya

    2007-12-01

    The sudden release of toxic contaminants that reach indoor spaces can be hazardousto building occupants. To respond effectively, the contaminant release must be quicklydetected and characterized to determine unobserved parameters, such as release locationand strength. Characterizing the release requires solving an inverse problem. Designinga robust real-time sensor system that solves the inverse problem is challenging becausethe fate and transport of contaminants is complex, sensor information is limited andimperfect, and real-time estimation is computationally constrained.This dissertation uses a system-level approach, based on a Bayes Monte Carloframework, to develop sensor-system design concepts and methods. I describe threeinvestigations that explore complex relationships among sensors, network architecture,interpretation algorithms, and system performance. The investigations use data obtainedfrom tracer gas experiments conducted in a real building. The influence of individual sensor characteristics on the sensor-system performance for binary-type contaminant sensors is analyzed. Performance tradeoffs among sensor accuracy, threshold level and response time are identified; these attributes could not be inferred without a system-level analysis. For example, more accurate but slower sensors are found to outperform less accurate but faster sensors. Secondly, I investigate how the sensor-system performance can be understood in terms of contaminant transport processes and the model representation that is used to solve the inverse problem. The determination of release location and mass are shown to be related to and constrained by transport and mixing time scales. These time scales explain performance differences among different sensor networks. For example, the effect of longer sensor response times is comparably less for releases with longer mixing time scales. The third investigation explores how information fusion from heterogeneous sensors may improve the sensor-system performance and offset the need for more contaminant sensors. Physics- and algorithm-based frameworks are presented for selecting and fusing information from noncontaminant sensors. The frameworks are demonstrated with door-position sensors, which are found to be more useful in natural airflow conditions, but which cannot compensate for poor placement of contaminant sensors. The concepts and empirical findings have the potential to help in the design of sensor systems for more complex building systems. The research has broader relevance to additional environmental monitoring problems, fault detection and diagnostics, and system design.

  6. An integrated, subsurface characterization system for real-time, in-situ field analysis

    SciTech Connect (OSTI)

    Baumgart, C.W.; Creager, J.; Mathes, J.; Pounds, T.; VanDeusen, A.; Warthen, B.

    1996-02-01

    This paper describes current efforts at AlliedSignal Federal Manufacturing and Technologies (FM and T) to develop and field an in-situ, data analysis platform to acquire, process, and display site survey data in near real-time. In past years, FM and T has performed a number of site survey tasks. Each of these surveys was unique in application as well as in the type of data processing and analysis that was required to extract and visualize useful site characterization information. However, common to each of these surveys were the following specific computational and operational requirements: (1) a capability to acquire, process, and visualize the site survey data in the field; (2) a capability to perform all processing in a timely fashion (ideally real-time); and (3) a technique for correlating (or fusing) data streams from multiple sensors. Two more general, but no less important, requirements include system architecture modularity and positioning capability. Potential applications include: survey, evaluation, and remediation of numerous Department of Defense and Department of Energy waste sites; real-time detection and characterization of unexploded ordnance and landmines; survey, evaluation, and remediation of industrial waste sites; location of underground utility lines; and providing law enforcement agencies with real-time surveys of crime scenes. The paper describes an integrated data acquisition, processing, and visualization platform that is capable of performing in-situ data processing, interpretation, and visualization in real-time.

  7. Enabling Real-Time Querying of Live and Historical Stream Data Frederick Reiss1,2,3

    E-Print Network [OSTI]

    Hellerstein, Joseph M.

    data only. While tra- ditional Database Management Systems (DBMS) can easily handle archived stream both real-time information about the stream and stored in- formation about the past history

  8. High-Performance Computing for Real-Time Grid Analysis and Operation

    SciTech Connect (OSTI)

    Huang, Zhenyu; Chen, Yousu; Chavarría-Miranda, Daniel

    2013-10-31

    Power grids worldwide are undergoing an unprecedented transition as a result of grid evolution meeting information revolution. The grid evolution is largely driven by the desire for green energy. Emerging grid technologies such as renewable generation, smart loads, plug-in hybrid vehicles, and distributed generation provide opportunities to generate energy from green sources and to manage energy use for better system efficiency. With utility companies actively deploying these technologies, a high level of penetration of these new technologies is expected in the next 5-10 years, bringing in a level of intermittency, uncertainties, and complexity that the grid did not see nor design for. On the other hand, the information infrastructure in the power grid is being revolutionized with large-scale deployment of sensors and meters in both the transmission and distribution networks. The future grid will have two-way flows of both electrons and information. The challenge is how to take advantage of the information revolution: pull the large amount of data in, process it in real time, and put information out to manage grid evolution. Without addressing this challenge, the opportunities in grid evolution will remain unfulfilled. This transition poses grand challenges in grid modeling, simulation, and information presentation. The computational complexity of underlying power grid modeling and simulation will significantly increase in the next decade due to an increased model size and a decreased time window allowed to compute model solutions. High-performance computing is essential to enable this transition. The essential technical barrier is to vastly increase the computational speed so operation response time can be reduced from minutes to seconds and sub-seconds. The speed at which key functions such as state estimation and contingency analysis are conducted (typically every 3-5 minutes) needs to be dramatically increased so that the analysis of contingencies is both comprehensive and real time. An even bigger challenge is how to incorporate dynamic information into real-time grid operation. Today’s online grid operation is based on a static grid model and can only provide a static snapshot of current system operation status, while dynamic analysis is conducted offline because of low computational efficiency. The offline analysis uses a worst-case scenario to determine transmission limits, resulting in under-utilization of grid assets. This conservative approach does not necessarily lead to reliability. Many times, actual power grid scenarios are not studied, and they will push the grid over the edge and resulting in outages and blackouts. This chapter addresses the HPC needs in power grid analysis and operations. Example applications such as state estimation and contingency analysis are given to demonstrate the value of HPC in power grid applications. Future research directions are suggested for high performance computing applications in power grids to improve the transparency, efficiency, and reliability of power grids.

  9. Real-time wideband holographic surveillance system

    DOE Patents [OSTI]

    Sheen, David M. (1917 Hood, Richland, WA 99352); Collins, H. Dale (1751 Duluth, Richland, WA 99352); Hall, Thomas E. (8301 W. Entiat Pl., Kennewick, WA 99336); McMakin, Douglas L. (2173 Shasta Ave., Richland, WA 99352); Gribble, R. Parks (1215 Cottonwood Dr., Richland, WA 99352); Severtsen, Ronald H. (1803 Birch Ave., Richland, WA 99352); Prince, James M. (3029 W. 2nd Ave., Apt. F95, Kennewick, WA 99336); Reid, Larry D. (Rt. 1, Box 1291B, Benton City, WA 99320)

    1996-01-01

    A wideband holographic surveillance system including a transceiver for generating a plurality of electromagnetic waves; antenna for transmitting the electromagnetic waves toward a target at a plurality of predetermined positions in space; the transceiver also receiving and converting electromagnetic waves reflected from the target to electrical signals at a plurality of predetermined positions in space; a computer for processing the electrical signals to obtain signals corresponding to a holographic reconstruction of the target; and a display for displaying the processed information to determine nature of the target. The computer has instructions to apply a three dimensional backward wave algorithm.

  10. Real-time holographic surveillance system

    DOE Patents [OSTI]

    Collins, H. Dale (Richland, WA); McMakin, Douglas L. (Richland, WA); Hall, Thomas E. (Kennewick, WA); Gribble, R. Parks (Richland, WA)

    1995-01-01

    A holographic surveillance system including means for generating electromagnetic waves; means for transmitting the electromagnetic waves toward a target at a plurality of predetermined positions in space; means for receiving and converting electromagnetic waves reflected from the target to electrical signals at a plurality of predetermined positions in space; means for processing the electrical signals to obtain signals corresponding to a holographic reconstruction of the target; and means for displaying the processed information to determine nature of the target. The means for processing the electrical signals includes means for converting analog signals to digital signals followed by a computer means to apply a backward wave algorithm.

  11. Real-time holographic surveillance system

    DOE Patents [OSTI]

    Collins, H.D.; McMakin, D.L.; Hall, T.E.; Gribble, R.P.

    1995-10-03

    A holographic surveillance system is disclosed including means for generating electromagnetic waves; means for transmitting the electromagnetic waves toward a target at a plurality of predetermined positions in space; means for receiving and converting electromagnetic waves reflected from the target to electrical signals at a plurality of predetermined positions in space; means for processing the electrical signals to obtain signals corresponding to a holographic reconstruction of the target; and means for displaying the processed information to determine nature of the target. The means for processing the electrical signals includes means for converting analog signals to digital signals followed by a computer means to apply a backward wave algorithm. 21 figs.

  12. Real-time wideband holographic surveillance system

    DOE Patents [OSTI]

    Sheen, D.M.; Collins, H.D.; Hall, T.E.; McMakin, D.L.; Gribble, R.P.; Severtsen, R.H.; Prince, J.M.; Reid, L.D.

    1996-09-17

    A wideband holographic surveillance system including a transceiver for generating a plurality of electromagnetic waves; antenna for transmitting the electromagnetic waves toward a target at a plurality of predetermined positions in space; the transceiver also receiving and converting electromagnetic waves reflected from the target to electrical signals at a plurality of predetermined positions in space; a computer for processing the electrical signals to obtain signals corresponding to a holographic reconstruction of the target; and a display for displaying the processed information to determine nature of the target. The computer has instructions to apply a three dimensional backward wave algorithm. 28 figs.

  13. A Study of "Churn" in Tweets and Real-Time Search Queries (Extended Version)

    E-Print Network [OSTI]

    Lin, Jimmy

    2012-01-01

    The real-time nature of Twitter means that term distributions in tweets and in search queries change rapidly: the most frequent terms in one hour may look very different from those in the next. Informally, we call this phenomenon "churn". Our interest in analyzing churn stems from the perspective of real-time search. Nearly all ranking functions, machine-learned or otherwise, depend on term statistics such as term frequency, document frequency, as well as query frequencies. In the real-time context, how do we compute these statistics, considering that the underlying distributions change rapidly? In this paper, we present an analysis of tweet and query churn on Twitter, as a first step to answering this question. Analyses reveal interesting insights on the temporal dynamics of term distributions on Twitter and hold implications for the design of search systems.

  14. Real-time, rapidly updating severe weather products for virtual globes Travis M. Smitha

    E-Print Network [OSTI]

    Lakshmanan, Valliappa

    Real-time, rapidly updating severe weather products for virtual globes Travis M. Smitha It is critical that weather forecasters are able to put severe weather information from a variety audience. In this paper, we describe the data and methods for enabling severe weather threat analysis

  15. Application of real time GPS to earthquake early warning Richard M. Allen1

    E-Print Network [OSTI]

    Allen, Richard M.

    in general including tsunami warning systems. Citation: Allen, R. M., and A. Ziv (2011), Application of real of earthquake magnitude for the purpose of earthquake early warning and real time earthquake information systems, 2008; Brown et al., 2009]. In the March 11, 2011 M9 Tohoku oki earthquake the JMA warning system issued

  16. Real time three dimensional sensing system

    DOE Patents [OSTI]

    Gordon, Steven J. (Boston, MA)

    1996-01-01

    The invention is a three dimensional sensing system which utilizes two flexibly located cameras for receiving and recording visual information with respect to a sensed object illuminated by a series of light planes. Each pixel of each image is converted to a digital word and the words are grouped into stripes, each stripe comprising contiguous pixels. One pixel of each stripe in one image is selected and an epi-polar line of that point is drawn in the other image. The three dimensional coordinate of each selected point is determined by determining the point on said epi-polar line which also lies on a stripe in the second image and which is closest to a known light plane.

  17. Real time three dimensional sensing system

    DOE Patents [OSTI]

    Gordon, S.J.

    1996-12-31

    The invention is a three dimensional sensing system which utilizes two flexibly located cameras for receiving and recording visual information with respect to a sensed object illuminated by a series of light planes. Each pixel of each image is converted to a digital word and the words are grouped into stripes, each stripe comprising contiguous pixels. One pixel of each stripe in one image is selected and an epi-polar line of that point is drawn in the other image. The three dimensional coordinate of each selected point is determined by determining the point on said epi-polar line which also lies on a stripe in the second image and which is closest to a known light plane. 7 figs.

  18. List Processing in Real Time on a Serial Computer

    E-Print Network [OSTI]

    Baker, Henry G. Jr.

    1977-04-01

    A real-time list processing system is one in which the time required by each elementary list operation (CONS, CAR, CDR, RPLACA, RPLACD, EQ, and ATOM in LISP) is bounded by a (small) constant. Classical list processing ...

  19. New Real-Time Quantum Efficiency Measurement System: Preprint

    SciTech Connect (OSTI)

    Young, D. L.; Egaas, B.; Pinegar, S.; Stradins, P.

    2008-05-01

    This paper describes a newly developed technique for measuring the quantum eficiiency in solar cells in real-time using a unique, electronically controlled, full-spectrum light source.

  20. Software development with real-time collaborative editing

    E-Print Network [OSTI]

    Goldman, Max, Ph. D. Massachusetts Institute of Technology

    2012-01-01

    This thesis presents Collabode, a web-based integrated development environment for Java. With real-time collaborative editing, multiple programmers can use Collabode to edit the same source code at the same time. Collabode ...

  1. Graphical user interface for real time simulator for relay testing 

    E-Print Network [OSTI]

    Ji, Fang

    1995-01-01

    This thesis presents a design of a graphical user interface for a real time simulator for relay testing. The objectives of this study are achieved successfully by utilizing object-oriented concepts and techniques. The GUI ...

  2. Looking at Transistor Gate Oxide Formation in Real Time

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Looking at Transistor Gate Oxide Formation in Real Time Print The oxide gate layer is critical to every transistor, and present-day layer thicknesses are in the 10-20 range (1-2...

  3. Real time observations of the nucleation and growth of nanowires...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Real time observations of the nucleation and growth of nanowires and nanotubes December 1, 2011 at 3pm36-428 Eric Stach Center for Functional Nanomaterials, Brookhaven National...

  4. Decoupled Sampling for Real-Time Graphics Pipelines

    E-Print Network [OSTI]

    Ragan-Kelley, Jonathan

    2010-03-29

    We propose decoupled sampling, an approach that decouples shading from visibility sampling in order to enable motion blur and depth-of-field at reduced cost. More generally, it enables extensions of modern real-time graphics ...

  5. Artificial Intelligence Design for Real-time Strategy Games

    E-Print Network [OSTI]

    Ernst, Damien

    Artificial Intelligence Design for Real-time Strategy Games Firas Safadi University of Li been challenging intelligence, human and artificial (AI) alike, as one of the top genre in terms

  6. National Spherical Torus Experiment (NSTX) Power Supply Real Time Controller

    E-Print Network [OSTI]

    . The NSTX depends on a real time, high speed, synchronous, and deterministic control system isolated from each other but subject to the same "Firing Generator" (FG). Each PSS Magnets Power Supply

  7. Real-time continuous gesture recognition for natural multimodal interaction

    E-Print Network [OSTI]

    Yin, Ying, Ph. D. Massachusetts Institute of Technology

    2014-01-01

    I have developed a real-time continuous gesture recognition system capable of dealing with two important problems that have previously been neglected: (a) smoothly handling two different kinds of gestures: those characterized ...

  8. Real-time state estimation of laboratory flows

    E-Print Network [OSTI]

    Stransky, Scott (Scott M.)

    2007-01-01

    In this project, we use a real time computer model to simulate a differentially heated laboratory annulus. The laboratory annulus allows us to study chaotic flows typical of the atmosphere. Our objective is to bring the ...

  9. Wavelets in Real-time Rendering Weifeng Sun

    E-Print Network [OSTI]

    Mukherjee, Amar

    Wavelets in Real-time Rendering by Weifeng Sun B.S. University of Petroleum, China, 1997 M by Weifeng Sun All rights reserved ii #12;ABSTRACT Interactively simulating visual appearance of natural

  10. Real-time Water Waves with Wave Particles 

    E-Print Network [OSTI]

    Yuksel, Cem

    2010-10-12

    This dissertation describes the wave particles technique for simulating water surface waves and two way fluid-object interactions for real-time applications, such as video games. Water exists in various different forms in our environment...

  11. A frequency compensated real time DSP GMSK modem 

    E-Print Network [OSTI]

    Aziz, Ahsan Ul

    1998-01-01

    In low-earth-orbit (LEO) satellite applications, frequency offsets due to Doppler can be large, and can degrade significantly receiver performance. In this thesis real-time implementation trade-offs are analyzed for a GMSK modem operating under...

  12. Real-time Multi-period truckload routing problems

    E-Print Network [OSTI]

    Limpaitoon, Tanachai

    2008-01-01

    In this thesis we consider a multi-period truckload pick-up and delivery problem dealing with real-time requests over a finite time horizon. We introduce the notion of postponement of requests, whereby the company can ...

  13. Vector processing enhancements for real-time image analysis.

    SciTech Connect (OSTI)

    Shoaf, S.; APS Engineering Support Division

    2008-01-01

    A real-time image analysis system was developed for beam imaging diagnostics. An Apple Power Mac G5 with an Active Silicon LFG frame grabber was used to capture video images that were processed and analyzed. Software routines were created to utilize vector-processing hardware to reduce the time to process images as compared to conventional methods. These improvements allow for more advanced image processing diagnostics to be performed in real time.

  14. Symbolic diagnosis for intelligent control of real-time systems 

    E-Print Network [OSTI]

    Jowers, Steven James

    1989-01-01

    automation, and aerospace power systems. The approach is to create a generic, symbolic shell to interpret data from 'real-time' numerical processes. The interpreted data is then utilized by com- panion symbolic and numeric modules resulting in a dynamic... 19 24 25 26 28 A. Intelligent control paradigm -overview . B. Software-intensive radio application . C. The Symbolic Diagnostician . . D. Design implementation . E. Real-time constraint 28 32 35 44 46 IV IMPLEMENTING THE DIAGNOSTIC...

  15. High speed, real-time, camera bandwidth converter

    DOE Patents [OSTI]

    Bower, Dan E; Bloom, David A; Curry, James R

    2014-10-21

    Image data from a CMOS sensor with 10 bit resolution is reformatted in real time to allow the data to stream through communications equipment that is designed to transport data with 8 bit resolution. The incoming image data has 10 bit resolution. The communication equipment can transport image data with 8 bit resolution. Image data with 10 bit resolution is transmitted in real-time, without a frame delay, through the communication equipment by reformatting the image data.

  16. Cybersecurity through Real-Time Distributed Control Systems

    SciTech Connect (OSTI)

    Kisner, Roger A; Manges, Wayne W; MacIntyre, Lawrence Paul; Nutaro, James J; Munro Jr, John K; Ewing, Paul D; Howlader, Mostofa; Kuruganti, Phani Teja; Wallace, Richard M; Olama, Mohammed M

    2010-04-01

    Critical infrastructure sites and facilities are becoming increasingly dependent on interconnected physical and cyber-based real-time distributed control systems (RTDCSs). A mounting cybersecurity threat results from the nature of these ubiquitous and sometimes unrestrained communications interconnections. Much work is under way in numerous organizations to characterize the cyber threat, determine means to minimize risk, and develop mitigation strategies to address potential consequences. While it seems natural that a simple application of cyber-protection methods derived from corporate business information technology (IT) domain would lead to an acceptable solution, the reality is that the characteristics of RTDCSs make many of those methods inadequate and unsatisfactory or even harmful. A solution lies in developing a defense-in-depth approach that ranges from protection at communications interconnect levels ultimately to the control system s functional characteristics that are designed to maintain control in the face of malicious intrusion. This paper summarizes the nature of RTDCSs from a cybersecurity perspec tive and discusses issues, vulnerabilities, candidate mitigation approaches, and metrics.

  17. Advanced Kalman Filter for Real-Time Responsiveness in Complex Systems

    SciTech Connect (OSTI)

    Welch, Gregory Francis [UNC-Chapel Hill/University of Central Florida] [UNC-Chapel Hill/University of Central Florida; Zhang, Jinghe [UNC-Chapel Hill/Virginia Tech] [UNC-Chapel Hill/Virginia Tech

    2014-06-10

    Complex engineering systems pose fundamental challenges in real-time operations and control because they are highly dynamic systems consisting of a large number of elements with severe nonlinearities and discontinuities. Today’s tools for real-time complex system operations are mostly based on steady state models, unable to capture the dynamic nature and too slow to prevent system failures. We developed advanced Kalman filtering techniques and the formulation of dynamic state estimation using Kalman filtering techniques to capture complex system dynamics in aiding real-time operations and control. In this work, we looked at complex system issues including severe nonlinearity of system equations, discontinuities caused by system controls and network switches, sparse measurements in space and time, and real-time requirements of power grid operations. We sought to bridge the disciplinary boundaries between Computer Science and Power Systems Engineering, by introducing methods that leverage both existing and new techniques. While our methods were developed in the context of electrical power systems, they should generalize to other large-scale scientific and engineering applications.

  18. Real time MHD mode control using ECCD in KSTAR: Plan and requirements

    SciTech Connect (OSTI)

    Joung, M.; Woo, M. H.; Jeong, J. H.; Hahn, S. H.; Yun, S. W.; Lee, W. R.; Bae, Y. S.; Oh, Y. K.; Kwak, J. G.; Yang, H. L. [National Fusion Research Institute, 52 Eoeun-dong, Yuseong-gu, Daejeon (Korea, Republic of); Namkung, W.; Park, H.; Cho, M. H. [Department of Physics, POSTECH, Hyoja-dong, Nam-gu, Pohang, Gyeongangbuk-do (Korea, Republic of); Kim, M. H.; Kim, K. J.; Na, Y. S. [Department of Nuclear Engineering, Seoul National University, Daehak-dong, Gwanak-gu, Seoul (Korea, Republic of); Hosea, J.; Ellis, R. [Princeton Plasma Physics Laboratory, Princeton (United States)

    2014-02-12

    For a high-performance, advanced tokamak mode in KSTAR, we have been developing a real-time control system of MHD modes such as sawtooth and Neo-classical Tearing Mode (NTM) by ECH/ECCD. The active feedback control loop will be also added to the mirror position and the real-time detection of the mode position. In this year, for the stabilization of NTM that is crucial to plasma performance we have implemented open-loop ECH antenna control system in KSTAR Plasma Control System (PCS) for ECH mirror movement during a single plasma discharge. KSTAR 170 GHz ECH launcher which was designed and fabricated by collaboration with PPPL and POSTECH has a final mirror of a poloidally and toroidally steerable mirror. The poloidal steering motion is only controlled in the real-time NTM control system and its maximum steering speed is 10 degree/sec by DC motor. However, the latency of the mirror control system and the return period of ECH antenna mirror angle are not fast because the existing launcher mirror control system is based on PLC which is connected to the KSTAR machine network through serial to LAN converter. In this paper, we present the design of real time NTM control system, ECH requirements, and the upgrade plan.

  19. Survivable, Real Time Network Services Defense Advanced Research Projects Agency

    E-Print Network [OSTI]

    Mills, David L.

    - siderably reduced the risk of multiple simultaneous updates, as well as the manual labor to upload

  20. Survivable, Real Time Network Services Defense Advanced Research Projects Agency

    E-Print Network [OSTI]

    Mills, David L.

    ­ siderably reduced the risk of multiple simultaneous updates, as well as the manual labor to upload

  1. Real-time self-networking radiation detector apparatus

    DOE Patents [OSTI]

    Kaplan, Edward (Stony Brook, NY); Lemley, James (Miller Place, NY); Tsang, Thomas Y. (Holbrook, NY); Milian, Laurence W. (East Patchogue, NY)

    2007-06-12

    The present invention is for a radiation detector apparatus for detecting radiation sources present in cargo shipments. The invention includes the features of integrating a bubble detector sensitive to neutrons and a GPS system into a miniaturized package that can wirelessly signal the presence of radioactive material in shipping containers. The bubble density would be read out if such indicated a harmful source.

  2. ANZA Real-time Seismic Network The ANZA Broadband and

    E-Print Network [OSTI]

    Vernon, Frank

    SCI2 HWB FSEFLV MTRP USA Mexico USA Mexico Figure 1. The ANZA seismic as AC power, telephone or computer communications. Each station can operate using solar power and all

  3. {Control of Residential Load Management Networks Using Real Time Pricing

    E-Print Network [OSTI]

    Burke, William Jerome

    2010-01-01

    and efficiency in power market design”. In Advances in Poweris more a question of market design and is left for relatedissues related to the market design that are outside the

  4. {Control of Residential Load Management Networks Using Real Time Pricing

    E-Print Network [OSTI]

    Burke, William Jerome

    2010-01-01

    modeling and control of load management. Further, withoutA profit-based load management using linear programming”.with applica- tions to load management assessment and load

  5. Survivable, Real Time Network Services Defense Advanced Research Projects Agency

    E-Print Network [OSTI]

    Mills, David L.

    -98-1-0225, DARPA Order G409/J175 Quarterly Progress Report 1 April 2002 - 30 June 2002 David L. Mills Electrical security protocols which resist accidental or mali- cious attacks on the servers and clients in a sensor

  6. Survivable, Real Time Network Services Defense Advanced Research Projects Agency

    E-Print Network [OSTI]

    Mills, David L.

    David L. Mills Electrical Engineering Department University of Delaware 1. Introduction This report is to develop and test security protocols which resist accidental or mali- cious attacks on the servers and

  7. Survivable, Real Time Network Services Defense Advanced Research Projects Agency

    E-Print Network [OSTI]

    Mills, David L.

    ­98­1­0225, DARPA Order G409/J175 Quarterly Progress Report 1 April 2002 ­ 30 June 2002 David L. Mills Electrical security protocols which resist accidental or mali­ cious attacks on the servers and clients in a sensor

  8. Information Propagation in Clustered Multilayer Networks

    E-Print Network [OSTI]

    Zhuang, Yong

    2015-01-01

    In today's world, individuals interact with each other in more complicated patterns than ever. Some individuals engage through online social networks (e.g., Facebook, Twitter), while some communicate only through conventional ways (e.g., face-to-face). Therefore, understanding the dynamics of information propagation among humans calls for a multi-layer network model where an online social network is conjoined with a physical network. In this work, we initiate a study of information diffusion in a clustered multi-layer network model, where all constituent layers are random networks with high clustering. We assume that information propagates according to the SIR model and with different information transmissibility across the networks. We give results for the conditions, probability, and size of information epidemics, i.e., cases where information starts from a single individual and reaches a positive fraction of the population. We show that increasing the level of clustering in either one of the layers increas...

  9. Analysis of real-time reservoir monitoring : reservoirs, strategies, & modeling.

    SciTech Connect (OSTI)

    Mani, Seethambal S.; van Bloemen Waanders, Bart Gustaaf; Cooper, Scott Patrick; Jakaboski, Blake Elaine; Normann, Randy Allen; Jennings, Jim; Gilbert, Bob; Lake, Larry W.; Weiss, Chester Joseph; Lorenz, John Clay; Elbring, Gregory Jay; Wheeler, Mary Fanett; Thomas, Sunil G.; Rightley, Michael J.; Rodriguez, Adolfo; Klie, Hector; Banchs, Rafael; Nunez, Emilio J.; Jablonowski, Chris

    2006-11-01

    The project objective was to detail better ways to assess and exploit intelligent oil and gas field information through improved modeling, sensor technology, and process control to increase ultimate recovery of domestic hydrocarbons. To meet this objective we investigated the use of permanent downhole sensors systems (Smart Wells) whose data is fed real-time into computational reservoir models that are integrated with optimized production control systems. The project utilized a three-pronged approach (1) a value of information analysis to address the economic advantages, (2) reservoir simulation modeling and control optimization to prove the capability, and (3) evaluation of new generation sensor packaging to survive the borehole environment for long periods of time. The Value of Information (VOI) decision tree method was developed and used to assess the economic advantage of using the proposed technology; the VOI demonstrated the increased subsurface resolution through additional sensor data. Our findings show that the VOI studies are a practical means of ascertaining the value associated with a technology, in this case application of sensors to production. The procedure acknowledges the uncertainty in predictions but nevertheless assigns monetary value to the predictions. The best aspect of the procedure is that it builds consensus within interdisciplinary teams The reservoir simulation and modeling aspect of the project was developed to show the capability of exploiting sensor information both for reservoir characterization and to optimize control of the production system. Our findings indicate history matching is improved as more information is added to the objective function, clearly indicating that sensor information can help in reducing the uncertainty associated with reservoir characterization. Additional findings and approaches used are described in detail within the report. The next generation sensors aspect of the project evaluated sensors and packaging survivability issues. Our findings indicate that packaging represents the most significant technical challenge associated with application of sensors in the downhole environment for long periods (5+ years) of time. These issues are described in detail within the report. The impact of successful reservoir monitoring programs and coincident improved reservoir management is measured by the production of additional oil and gas volumes from existing reservoirs, revitalization of nearly depleted reservoirs, possible re-establishment of already abandoned reservoirs, and improved economics for all cases. Smart Well monitoring provides the means to understand how a reservoir process is developing and to provide active reservoir management. At the same time it also provides data for developing high-fidelity simulation models. This work has been a joint effort with Sandia National Laboratories and UT-Austin's Bureau of Economic Geology, Department of Petroleum and Geosystems Engineering, and the Institute of Computational and Engineering Mathematics.

  10. Parallel architecture for real-time simulation. Master's thesis

    SciTech Connect (OSTI)

    Cockrell, C.D.

    1989-01-01

    This thesis is concerned with the development of a very fast and highly efficient parallel computer architecture for real-time simulation of continuous systems. Currently, several parallel processing systems exist that may be capable of executing a complex simulation in real-time. These systems are examined and the pros and cons of each system discussed. The thesis then introduced a custom-designed parallel architecture based upon The University of Alabama's OPERA architecture. Each component of this system is discussed and rationale presented for its selection. The problem selected, real-time simulation of the Space Shuttle Main Engine for the test and evaluation of the proposed architecture, is explored, identifying the areas where parallelism can be exploited and parallel processing applied. Results from the test and evaluation phase are presented and compared with the results of the same problem that has been processed on a uniprocessor system.

  11. Toward Real Time Data Analysis for Smart Grids

    SciTech Connect (OSTI)

    Yin, Jian; Gorton, Ian; Sharma, Poorva

    2012-11-10

    This paper describes the architecture and design of a novel system for supporting large-scale real-time data analysis for future power grid systems. The widespread deployment of renewable generation, smart grid controls, energy storage, plug-in hybrids, and new conducting materials will require fundamental changes in the operational concepts and principal components of the grid. As a result, the whole system becomes highly dynamic and requires constant adjusting based on real time data. Even though millions of sensors such as phase measurement units (PMU) and smart meters are being widely deployed, a data layer that can analyze this amount of data in real time is needed. Unlike the data fabric in other cloud services, the data layer for smart grids has some unique design requirements. First, this layer must provide real time guarantees. Second, this layer must be scalable to allow a large number of applications to access the data from millions of sensors in real time. Third, reliability is critical and this layer must be able to continue to provide service in face of failures. Fourth, this layer must be secure. We address these challenges though a scalable system architecture that integrates the I/O and data processing capability in a devise set of devices. Data process operations can be placed anywhere from sensors, data storage devices, to control centers. We further employ compression to improve performance. We design a lightweight compression customized for power grid data. Our system can reduce end-to-end response time by reduce I/O overhead through compression and overlap compression operations with I/O. The initial prototype of our system was demonstrated with several use cases from PNNL’s FPGI and show that our system can provide real time guarantees to a diverse set of applications.

  12. Towards Real Time Diagnostics of Hybrid Welding Laser/GMAW

    SciTech Connect (OSTI)

    Timothy Mcjunkin; Dennis C. Kunerth; Corrie Nichol; Evgueni Todorov; Steve Levesque; Feng Yu; Robert Danna Couch

    2013-07-01

    Methods are currently being developed towards a more robust system real time feedback in the high throughput process combining laser welding with gas metal arc welding. A combination of ultrasonic, eddy current, electronic monitoring, and visual techniques are being applied to the welding process. Initial simulation and bench top evaluation of proposed real time techniques on weld samples are presented along with the concepts to apply the techniques concurrently to the weld process. Consideration for the eventual code acceptance of the methods and system are also being researched as a component of this project. The goal is to detect defects or precursors to defects and correct when possible during the weld process.

  13. Towards real time diagnostics of Hybrid Welding Laser/GMAW

    SciTech Connect (OSTI)

    McJunkin, T. R.; Kunerth, D. C.; Nichol, C. I. [Idaho National Laboratory, Idaho Falls, ID 83415-3570 (United States); Todorov, E.; Levesque, S. [Edison Welding Institute, Columbus, OH (United States)

    2014-02-18

    Methods are currently being developed towards a more robust system real time feedback in the high throughput process combining laser welding with gas metal arc welding. A combination of ultrasonic, eddy current, electronic monitoring, and visual techniques are being applied to the welding process. Initial simulation and bench top evaluation of proposed real time techniques on weld samples are presented along with the concepts to apply the techniques concurrently to the weld process. Consideration for the eventual code acceptance of the methods and system are also being researched as a component of this project. The goal is to detect defects or precursors to defects and correct when possible during the weld process.

  14. A heterogeneous hierarchical architecture for real-time computing

    SciTech Connect (OSTI)

    Skroch, D.A.; Fornaro, R.J.

    1988-12-01

    The need for high-speed data acquisition and control algorithms has prompted continued research in the area of multiprocessor systems and related programming techniques. The result presented here is a unique hardware and software architecture for high-speed real-time computer systems. The implementation of a prototype of this architecture has required the integration of architecture, operating systems and programming languages into a cohesive unit. This report describes a Heterogeneous Hierarchial Architecture for Real-Time (H{sup 2} ART) and system software for program loading and interprocessor communication.

  15. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMassR&D100 Winners * Impacts onReal-Time Chemical Imaging of Bacterial BiofilmReal-Time

  16. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) by Carbon-RichProton DeliveryRadioactiveRare |Real-Time ChemicalReal-Time

  17. Real-time, interactive animation of deformable two- and three-dimensional objects

    DOE Patents [OSTI]

    Desbrun, Mathieu; Schroeder, Peter; Meyer, Mark; Barr, Alan H.

    2003-06-03

    A method of updating in real-time the locations and velocities of mass points of a two- or three-dimensional object represented by a mass-spring system. A modified implicit Euler integration scheme is employed to determine the updated locations and velocities. In an optional post-integration step, the updated locations are corrected to preserve angular momentum. A processor readable medium and a network server each tangibly embodying the method are also provided. A system comprising a processor in combination with the medium, and a system comprising the server in combination with a client for accessing the server over a computer network, are also provided.

  18. Development of a Real-Time, High-Speed Distribution Level Data Acquisition System

    SciTech Connect (OSTI)

    Bank, J.; Kroposki, B.

    2012-01-01

    With the development of smart grids and the deployment of their enabling technologies, improved data acquisition will be needed at the distribution level to understand the full impact of these changes. With this in mind, NREL has developed a high-speed measurement and data collection network targeted specifically at the distribution level. This network is based around adaptable, rugged measurement devices designed for deployment at a variety of low and medium voltage locations below the sub-station. Each of these devices is capable of real-time data transmission via an Internet connection. Additionally, several analysis and visualization applications have been developed around the incoming data streams.

  19. A Comparison of Real-Time Thermal Rating Systems in the U.S. and the U.K.

    SciTech Connect (OSTI)

    Jake P. Gentle; Kurt S. Myers; Jason W. Bush; Isaac J. West; David M. Greenwood; Grant L. Ingram; Peter J. Davison; Matthias C.M. Troffaes

    2014-08-01

    Real-time thermal rating is a smart-grid technology that allows the rating of electrical conductors to be increased based on local weather conditions. Overhead lines are conventionally given a conservative, constant seasonal rating based on seasonal and regional worst case scenarios rather than actual, say, local hourly weather predictions. This paper provides a report of two pioneering schemes-one in the U.S. and one in the U.K.-where real-time thermal ratings have been applied. Thereby, we demonstrate that observing the local weather conditions in real time leads to additional capacity and safer operation. Second, we critically compare both approaches and discuss their limitations. In doing so, we arrive at novel insights which will inform and improve future real-time thermal rating projects.

  20. Real Time Head Pose Estimation from Consumer Depth Cameras

    E-Print Network [OSTI]

    Wolberg, George

    for estimating location and orientation of a person's head, from depth data acquired by a low quality device. OurReal Time Head Pose Estimation from Consumer Depth Cameras Gabriele Fanelli1 , Thibaut Weise2 and the variance of the head position and orientation. We evaluate three different approaches to jointly take

  1. COOPERATIVE REAL-TIME TASK ALLOCATION AMONG GROUPS OF UAVS

    E-Print Network [OSTI]

    Minai, Ali A.

    Chapter 1 COOPERATIVE REAL-TIME TASK ALLOCATION AMONG GROUPS OF UAVS Yan Jin Marios M. Polycarpou of Cincinnati Cincinnati, OH 45221 Abstract Uninhabited autonomous vehicles(UAVs) are an increasingly important, and this is the focus of the research presented here. We consider a heterogeneous group of UAVs drawn from several

  2. REAL TIME MONITORING OF INFRASTRUCTURE USING TDR TECHNOLOGY: CASE HISTORIES

    E-Print Network [OSTI]

    REAL TIME MONITORING OF INFRASTRUCTURE USING TDR TECHNOLOGY: CASE HISTORIES Kevin M. O Reflectometry (TDR) is a versatile technology amenable to a variety of measurements and nondestructive in a companion paper and this paper focuses on case histories in which TDR was used to monitor deformation

  3. A TECHNIQUE FOR TESTING HIGHLY RELIABLE REAL-TIME SOFTWARE

    E-Print Network [OSTI]

    Bieman, James M.

    Task Plan ® A TECHNIQUE FOR TESTING HIGHLY RELIABLE REAL-TIME SOFTWARE Slide Presentation Biography that uses executable specifications based on Annotated Ada (Anna) for software testing in hard real process and does not interfere with the software under test. 1.0 INTRODUCTION Automating the verification

  4. TOWARDS REAL-TIME GENERATION SCHEDULING IN MICROGRIDS WITH

    E-Print Network [OSTI]

    Zhang, Junshan

    TOWARDS REAL-TIME GENERATION SCHEDULING IN MICROGRIDS WITH PERFORMANCE GUARANTEE LIAN LU, JINLONG TU, CHI-KIN CHAU, MINGHUA CHEN, ZHAO XU AND XIAOJUN LIN INTRODUCTION Microgrid is an emerging- generation improves generation efficiency by 2-3x. A key problem in microgrid operations is how to schedule

  5. Real-time Photo Mining from the Twitter Stream

    E-Print Network [OSTI]

    Yanai, Keiji

    Real-time Photo Mining from the Twitter Stream: Event Photo Discovery and Food Photo Detection-Communications, Tokyo, Japan #12;Background ·Various kinds of photos are posted to microblogs every minutes. ·The photos photo source than Flickr. #12;Twitter vs. Flickr as photo sources ·Everyday life · w/ tweet messages

  6. Real-Time Redox Measurements during Endoplasmic Reticulum Stress Reveal

    E-Print Network [OSTI]

    Mullins, Dyche

    Real-Time Redox Measurements during Endoplasmic Reticulum Stress Reveal Interlinked Protein Folding.10.011 SUMMARY Disruption of protein folding in the endoplasmic reticulum (ER) causes unfolded proteins to accumu is active. Because ER redox po- tential is optimized for oxidative protein folding, we reasoned

  7. Accuracy of near real time updates in wind power forecasting

    E-Print Network [OSTI]

    Heinemann, Detlev

    Accuracy of near real time updates in wind power forecasting with regard to different weather October 2007 #12;EMS/ECAM 2007 ­ Nadja Saleck Outline · Study site · Wind power forecasting - method #12;EMS/ECAM 2007 ­ Nadja Saleck Wind power forecast data observed wind power input (2004 ­ 2006

  8. REAL TIME ACQUISITION AND RENDERING OF LARGE 3D MODELS

    E-Print Network [OSTI]

    Rusinkiewicz, Szymon

    OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY Szymon Marek Rusinkiewicz August 2001 #12;ii c Copyright grid, and point (splat) rendering is used to provide a real-time display of the partial 3D model. Given, backface culling, level-of-detail control, and splat rendering. The system may also be extended

  9. Cost aware real time big data processing in Cloud Environments

    E-Print Network [OSTI]

    Buyya, Rajkumar

    Cost aware real time big data processing in Cloud Environments By Cristian Montero Under and volatility of Big-data application workloads, it is difficult to decide when and how to scale up and down Environments . . . . . . . . . . . . . . . . . . . 9 2.2 Big Data

  10. University of Alberta REAL-TIME PROCESSING FOR

    E-Print Network [OSTI]

    Joseph, Dileepan

    University of Alberta REAL-TIME PROCESSING FOR LOGARITHMIC CMOS IMAGE SENSORS by Jing Li A thesis Engineering c Jing Li Spring 2012 Edmonton, Alberta Permission is hereby granted to the University of Alberta form, the University of Alberta will advise potential users of the thesis of these terms. The author

  11. ARCHITECTURE FOR A PORTABLE OPEN SOURCE REAL TIME KERNEL ENVIRONMENT

    E-Print Network [OSTI]

    Lipari, Giuseppe

    to the automotive industry. The set of tools comprises a schedulability analyzer, a kernel library and a kernel con platforms without sacri#28;cing performance. With our tools, the programmer only need to write of an Open Source Real Time Kernel for embedded automotive applications. Developing a kernel

  12. Real-Time Computing Using GPUs The Challenge

    E-Print Network [OSTI]

    Pollefeys, Marc

    -time constraints exist. For example, envisioned automated automotive systems will require real-time sensing applications on heterogeneous platforms that may have multiple CPUs and GPUs. The Approach This goal-time applications implemented on GPU-enabled multicore platforms. This project will contribute new real

  13. A Java Processor Architecture for Embedded Real-Time Systems

    E-Print Network [OSTI]

    A Java Processor Architecture for Embedded Real-Time Systems Martin Schoeberl Institute of Computer conservative estimates. JOP (Java Optimized Processor) tackles this problem from the architectural perspective average case performance. This paper presents a Java processor designed for time-predictable execution

  14. Real Time PMU-Based Stability Monitoring Final Project Report

    E-Print Network [OSTI]

    Center Empowering Minds to Engineer the Future Electric Energy System #12;#12;Real Time PMU, Western Area Power Administration Clifton Black, Southern Company David Schooley, Exelon the increasing amount of PMU data for operation, planning, protection, and control. This research proposes new

  15. Real-time Dynamic Optimization of Batch Crystallization Processes

    E-Print Network [OSTI]

    Van den Hof, Paul

    process. The seeded fed-batch crystallizer is represented by a nonlinear moment model. An optimal controlReal-time Dynamic Optimization of Batch Crystallization Processes Ali Mesbah, , Alex N. Kalbasenka-time implementations of the proposed strategy reveal the effectiveness of closed-loop optimal control

  16. Real-time Classification for The Palomar Transient Factory

    E-Print Network [OSTI]

    Real-time Classification for The Palomar Transient Factory Joseph Richards UC Berkeley Department;Transient Classification Project (TCP) J. Richards Classification for PTF 2 #12;Outline 1 Palomar Transient for PTF? J. Richards Classification for PTF 3 #12;Palomar Transient Factory (PTF) Fully-automated survey

  17. Real-time Modelling of Tsunami Data Applied Physics Laboratory

    E-Print Network [OSTI]

    Percival, Don

    Real-time Modelling of Tsunami Data Applied Physics Laboratory Department of Statistics University for Tsunami Research #12;Background - I · even before disasterous Sumatra tsunami in December 2004, de- structive potential of earthquake-generated tsunamis was well- known · due to rate at which a tsunami

  18. Concurrent and Real Time Systems: the CSP approach Steve Schneider

    E-Print Network [OSTI]

    Doran, Simon J.

    Concurrent and Real Time Systems: the CSP approach by Steve Schneider First published 1999 Systems the CSP approach Steve Schneider A Wiley-Interscience Publication JOHN WILEY & SONS, INC. New York Whitehead This book provides an introduction to Communicating Sequential Processes (CSP) and its use

  19. Constraint Orientated Specification with CSP and Real Time Temporal Logic

    E-Print Network [OSTI]

    Kent, University of

    Constraint Orientated Specification with CSP and Real Time Temporal Logic Justin Pearson Department Processes (CSP) [Hoa85] and a version of Propositional Temporal Logic (PTL), derived from [Eme90]. CSP. The behaviour of a CSP process is dependent on its environment; it is therefore difficult to assert global

  20. Real-time graphic displays in Mars. [AVLIS process

    SciTech Connect (OSTI)

    Treadway, T.

    1985-12-01

    Real-time diagnostic data of the AVLIS process is displayed in the form of a two-dimensional plot on selected monitors in the Mars Control Room. Each Mars workstation contains a HP2622 terminal for computer interface to the experiment and a Raster Technologies graphic controller driving a Conrac high resolution color monitor for graphics output.

  1. Volumetric Meshes for RealTime Medical Simulations

    E-Print Network [OSTI]

    Teschner, Matthias

    Volumetric Meshes for Real­Time Medical Simulations Matthias Mueller and Matthias Teschner Computer present an approach to generating volumetric meshes from closed triangulated surface meshes. The approach adapt the accuracy of the correspondence of the boundary of the volumetric mesh with the given surface

  2. Mining, Modeling, and Analyzing Real-Time Social Trails 

    E-Print Network [OSTI]

    Kamath, Krishna Y

    2013-05-28

    Real-time social systems are the fastest growing phenomena on the web, enabling millions of users to generate, share, and consume content on a massive scale. These systems are manifestations of a larger trend toward the global sharing of the real...

  3. Real-Time Building Energy Simulation Using EnergyPlus and the Building Controls Test Bed

    E-Print Network [OSTI]

    Pang, Xiufeng

    2013-01-01

    generation building energy simulation program. Energy andReal-Time Building Energy Simulation Using EnergyPlus andREAL-TIME BUILDING ENERGY SIMULATION USING ENERGYPLUS AND

  4. A flood-based information flow analysis and network minimization method for gene regulatory networks

    E-Print Network [OSTI]

    Pavlogiannis, Andreas; Mozhayskiy, Vadim; Tagkopoulos, Ilias

    2013-01-01

    as: Pavlogiannis et al. : A flood-based information flowRESEARCH ARTICLE Open Access A flood-based information flowlevels. Keywords: Network flood, Network flux, Information

  5. A Prototype for a Real-Time Weather Responsive System* Axel Krings, Ahmed Serageldin1 and Ahmed Abdel-Rahim2

    E-Print Network [OSTI]

    Krings, Axel W.

    A Prototype for a Real-Time Weather Responsive System* Axel Krings, Ahmed Serageldin1 and Ahmed Abdel-Rahim2 Abstract-- This paper presents a prototype of a secure, de- pendable, real-time weather-responsive system. The prototype performs two operations: 1) it accesses weather information that provides near

  6. Teaching Contemporary Physics Topics Using Real-Time Data Obtained via the World Wide Web Authors: A.P. Post-Zwicker,1

    E-Print Network [OSTI]

    Page 1 Teaching Contemporary Physics Topics Using Real-Time Data Obtained via the World Wide Web As a teaching tool, the World Wide Web (WWW) is unprecedented in its ability to transmit information and enhance the site in the classroom. Keywords: Real-time data, World Wide Web, teaching, high school, fusion energy

  7. Network Infusion to Infer Information Sources in Networks

    E-Print Network [OSTI]

    Feizi, Soheil

    2014-12-02

    Several models exist for diffusion of signals across biological, social, or engineered networks. However, the inverse problem of identifying the source of such propagated information appears more difficult even in the ...

  8. Optimal Real-time Dispatch for Integrated Energy Systems

    SciTech Connect (OSTI)

    Firestone, Ryan Michael

    2007-05-31

    This report describes the development and application of a dispatch optimization algorithm for integrated energy systems (IES) comprised of on-site cogeneration of heat and electricity, energy storage devices, and demand response opportunities. This work is intended to aid commercial and industrial sites in making use of modern computing power and optimization algorithms to make informed, near-optimal decisions under significant uncertainty and complex objective functions. The optimization algorithm uses a finite set of randomly generated future scenarios to approximate the true, stochastic future; constraints are included that prevent solutions to this approximate problem from deviating from solutions to the actual problem. The algorithm is then expressed as a mixed integer linear program, to which a powerful commercial solver is applied. A case study of United States Postal Service Processing and Distribution Centers (P&DC) in four cities and under three different electricity tariff structures is conducted to (1) determine the added value of optimal control to a cogeneration system over current, heuristic control strategies; (2) determine the value of limited electric load curtailment opportunities, with and without cogeneration; and (3) determine the trade-off between least-cost and least-carbon operations of a cogeneration system. Key results for the P&DC sites studied include (1) in locations where the average electricity and natural gas prices suggest a marginally profitable cogeneration system, optimal control can add up to 67% to the value of the cogeneration system; optimal control adds less value in locations where cogeneration is more clearly profitable; (2) optimal control under real-time pricing is (a) more complicated than under typical time-of-use tariffs and (b) at times necessary to make cogeneration economic at all; (3) limited electric load curtailment opportunities can be more valuable as a compliment to the cogeneration system than alone; and (4) most of the trade-off between least-cost and least-carbon IES is determined during the system design stage; for the IES system considered, there is little difference between least-cost control and least-carbon control.

  9. Real time markerless motion tracking using linked kinematic chains

    DOE Patents [OSTI]

    Luck, Jason P. (Arvada, CO); Small, Daniel E. (Albuquerque, NM)

    2007-08-14

    A markerless method is described for tracking the motion of subjects in a three dimensional environment using a model based on linked kinematic chains. The invention is suitable for tracking robotic, animal or human subjects in real-time using a single computer with inexpensive video equipment, and does not require the use of markers or specialized clothing. A simple model of rigid linked segments is constructed of the subject and tracked using three dimensional volumetric data collected by a multiple camera video imaging system. A physics based method is then used to compute forces to align the model with subsequent volumetric data sets in real-time. The method is able to handle occlusion of segments and accommodates joint limits, velocity constraints, and collision constraints and provides for error recovery. The method further provides for elimination of singularities in Jacobian based calculations, which has been problematic in alternative methods.

  10. Real-time multiplexed digital cavity-enhanced spectroscopy

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Boyson, Toby K.; Dagdigian, Paul J.; Pavey, Karl D.; Fitzgerald, Nicholas J.; Spence, Thomas G.; Moore, David S.; Harb, Charles C.

    2015-10-01

    Cavity-enhanced spectroscopy is a sensitive optical absorption technique but one where the practical applications have been limited to studying small wavelength ranges. In addition, this Letter shows that wideband operation can be achieved by combining techniques usually reserved for the communications community with that of cavity-enhanced spectroscopy, producing a multiplexed real-time cavity-enhanced spectrometer. We use multiple collinear laser sources operating asynchronously and simultaneously while being detected on a single photodetector. This is synonymous with radio frequency (RF) cellular systems in which signals are detected on a single antenna but decoded uniquely. Here, we demonstrate results with spectra of methyl salicylatemore »and show parts-per-billion per root hertz sensitivity measured in real-time.« less

  11. Real-time performance monitoring and management system

    DOE Patents [OSTI]

    Budhraja, Vikram S. (Los Angeles, CA); Dyer, James D. (La Mirada, CA); Martinez Morales, Carlos A. (Upland, CA)

    2007-06-19

    A real-time performance monitoring system for monitoring an electric power grid. The electric power grid has a plurality of grid portions, each grid portion corresponding to one of a plurality of control areas. The real-time performance monitoring system includes a monitor computer for monitoring at least one of reliability metrics, generation metrics, transmission metrics, suppliers metrics, grid infrastructure security metrics, and markets metrics for the electric power grid. The data for metrics being monitored by the monitor computer are stored in a data base, and a visualization of the metrics is displayed on at least one display computer having a monitor. The at least one display computer in one said control area enables an operator to monitor the grid portion corresponding to a different said control area.

  12. Wide-area, real-time monitoring and visualization system

    DOE Patents [OSTI]

    Budhraja, Vikram S. (Los Angeles, CA); Dyer, James D. (La Mirada, CA); Martinez Morales, Carlos A. (Upland, CA)

    2011-11-15

    A real-time performance monitoring system for monitoring an electric power grid. The electric power grid has a plurality of grid portions, each grid portion corresponding to one of a plurality of control areas. The real-time performance monitoring system includes a monitor computer for monitoring at least one of reliability metrics, generation metrics, transmission metrics, suppliers metrics, grid infrastructure security metrics, and markets metrics for the electric power grid. The data for metrics being monitored by the monitor computer are stored in a data base, and a visualization of the metrics is displayed on at least one display computer having a monitor. The at least one display computer in one said control area enables an operator to monitor the grid portion corresponding to a different said control area.

  13. Wide-area, real-time monitoring and visualization system

    SciTech Connect (OSTI)

    Budhraja, Vikram S.; Dyer, James D.; Martinez Morales, Carlos A.

    2013-03-19

    A real-time performance monitoring system for monitoring an electric power grid. The electric power grid has a plurality of grid portions, each grid portion corresponding to one of a plurality of control areas. The real-time performance monitoring system includes a monitor computer for monitoring at least one of reliability metrics, generation metrics, transmission metrics, suppliers metrics, grid infrastructure security metrics, and markets metrics for the electric power grid. The data for metrics being monitored by the monitor computer are stored in a data base, and a visualization of the metrics is displayed on at least one display computer having a monitor. The at least one display computer in one said control area enables an operator to monitor the grid portion corresponding to a different said control area.

  14. The Western Pacific Fishery Information Network: A Fisheries Information System

    E-Print Network [OSTI]

    The Western Pacific Fishery Information Network: A Fisheries Information System Introduction. This pa per describes the development and status of this fishery information system. DAVID C. HAMM fishery chang ing with them to obtain and utilize the proper data and information needed to monitor and manage

  15. Flash Memory Garbage Collection in Hard Real-Time Systems 

    E-Print Network [OSTI]

    Lai, Chien-An

    2012-10-19

    , B.S., National Taiwan University Chair of Advisory Committee: Dr. Riccardo Bettati Due to advances in capacity, speed, and economics, NAND-based ash memory technology is increasingly integrated into all types of computing systems, ranging from... enterprise servers to embedded devices. However, due to its unpredictable up- date behavior and time consuming garbage collection mechanism, NAND-based ash memory is di cult to integrate into hard-real-time embedded systems. In this thesis, I propose a...

  16. Repsol Cartagena Utilities Real Time Optimization -- A Success Story 

    E-Print Network [OSTI]

    Piccolo, M.; Shyr, S.

    1999-01-01

    cogeneration system that supplies both electricity and stearn to the site. The surplus electricity is exported to the National grid. The system consists of the following: ~ Gas Turbine and Heat Recovery Steam Generator ~ Four fired boilers ~ Four steam...-linear modelling and optimization. Data is supplied through Uniformance PHD, Honeywell Hi-Spec Solutions' real time database. The cogeneration system is controlled using Honeywell's IDC 3000 system. The Utility System at Repsol Cartagena refinery is a...

  17. Monitoring and simulating real-time electric power system operation with phasor measurements

    SciTech Connect (OSTI)

    Phadke, A.G. [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States)] [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States); Thorp, J.S. [American Electric Power Corp. (United States)] [American Electric Power Corp. (United States)

    1995-01-01

    In this research project, two important results have been achieved. The concept of generator axis load flow has been developed more fully, and has been tested through simulations on the 39-bus system (with 10 generators). Generator axis load flow is a load flow calculation which views the entire network from a few retained buses such as the internal nodes of the generators. As these nodes can be indirectly monitored in real time through phasor measurements of generator terminal quantities, it becomes possible to track and predict the behavior of the entire network from these few observation points. This is extremely valuable in the task of predicting network instability in real time. The task of instability prediction of a multi-machine power system is one of the most difficult analytical exercises. We investigated two of the most promising approaches: the extended equal area method, and the transient energy function method. Although both of these methods work well in many instances, we have shown that in other cases, the predictions made by the two methods are incorrect. The failure of the methods can be traced to their inability to deal with the behavior of the system after the first turning point of the motor swing curves. Instead of using these methods, we propose the direct integration of the machine swing equations following the start of a disturbance. Coupled with the generator aids load flow developed above, and using the high speed computers available now, we show that for systems of significant size (39 bus system), accurate predictions through direct computation are possible. The report also includes results on computational efficiency of the method of faster-than-real-time integration using machine equations and the generator aids load flow. It is anticipated that this technique will be useful in most practical applications in power system control centers of the future.

  18. Real-Time Android RealTime DSP AB is a consultant firm, supplying expertise within the areas embedded systems and

    E-Print Network [OSTI]

    Svenningsson, Josef

    Real-Time Android RealTime DSP AB is a consultant firm, supplying expertise within the areas The Android platform is widely used for smartphones running all sorts of applications. Though most-time demands. Since Android is based on a Linux kernel, which is not made for real-time applications, you

  19. Real-time Pricing Demand Response in Operations

    SciTech Connect (OSTI)

    Widergren, Steven E.; Marinovici, Maria C.; Berliner, Teri; Graves, Alan

    2012-07-26

    Abstract—Dynamic pricing schemes have been implemented in commercial and industrial application settings, and recently they are getting attention for application to residential customers. Time-of-use and critical-peak-pricing rates are in place in various regions and are being piloted in many more. These programs are proving themselves useful for balancing energy during peak periods; however, real-time (5 minute) pricing signals combined with automation in end-use systems have the potential to deliver even more benefits to operators and consumers. Besides system peak shaving, a real-time pricing system can contribute demand response based on the locational marginal price of electricity, reduce load in response to a generator outage, and respond to local distribution system capacity limiting situations. The US Department of Energy (DOE) is teaming with a mid-west electricity service provider to run a distribution feeder-based retail electricity market that negotiates with residential automation equipment and clears every 5 minutes, thus providing a signal for lowering or raising electric consumption based on operational objectives of economic efficiency and reliability. This paper outlines the capability of the real-time pricing system and the operational scenarios being tested as the system is rolled-out starting in the first half of 2012.

  20. Embedded Databases for Embedded Real-Time Systems: A Component-Based Approach1

    E-Print Network [OSTI]

    Embedded Databases for Embedded Real-Time Systems: A Component-Based Approach1 Aleksandra Tesanovi of embedded real-time systems has increased dramatically. At the same time, the amount of data that needs in embedded real-time systems. However, a database that can be used in an embedded real-time system must

  1. Systematic Security and Timeliness Tradeoffs in Real-Time Embedded Systems Kyoung-Don Kang

    E-Print Network [OSTI]

    Kang, Kyoung-Don

    security requirements in soft real-time applications such as battlefield monitoring and target track- ing

  2. Real-time measurement of radon activity and mixed radiation fields characterization with silicon pixel detector

    E-Print Network [OSTI]

    Severino, Clizia Tecla; Silari, Marco

    Real-time measurement of radon activity and mixed radiation fields characterization with silicon pixel detector

  3. Development of a High Resolution, Real Time, Distribution-Level Metering System and Associated Visualization, Modeling, and Data Analysis Functions

    SciTech Connect (OSTI)

    Bank, J.; Hambrick, J.

    2013-05-01

    NREL is developing measurement devices and a supporting data collection network specifically targeted at electrical distribution systems to support research in this area. This paper describes the measurement network which is designed to apply real-time and high speed (sub-second) measurement principles to distribution systems that are already common for the transmission level in the form of phasor measurement units and related technologies.

  4. Imaging gene expression in real-time using aptamers

    SciTech Connect (OSTI)

    Shin, Il Chung

    2011-12-13

    Signal transduction pathways are usually activated by external stimuli and are transient. The downstream changes such as transcription of the activated genes are also transient. Real-time detection of promoter activity is useful for understanding changes in gene expression, especially during cell differentiation and in development. A simple and reliable method for viewing gene expression in real time is not yet available. Reporter proteins such as fluorescent proteins and luciferase allow for non-invasive detection of the products of gene expression in living cells. However, current reporter systems do not provide for real-time imaging of promoter activity in living cells. This is because of the long time period after transcription required for fluorescent protein synthesis and maturation. We have developed an RNA reporter system for imaging in real-time to detect changes in promoter activity as they occur. The RNA reporter uses strings of RNA aptamers that constitute IMAGEtags (Intracellular MultiAptamer GEnetic tags), which can be expressed from a promoter of choice. The tobramycin, neomycin and PDC RNA aptamers have been utilized for this system and expressed in yeast from the GAL1 promoter. The IMAGEtag RNA kinetics were quantified by RT-qPCR. In yeast precultured in raffinose containing media the GAL1 promoter responded faster than in yeast precultured in glucose containing media. IMAGEtag RNA has relatively short half-life (5.5 min) in yeast. For imaging, the yeast cells are incubated with their ligands that are labeled with fluorescent dyes. To increase signal to noise, ligands have been separately conjugated with the FRET (Förster resonance energy transfer) pairs, Cy3 and Cy5. With these constructs, the transcribed aptamers can be imaged after activation of the promoter by galactose. FRET was confirmed with three different approaches, which were sensitized emission, acceptor photobleaching and donor lifetime by FLIM (fluorescence lifetime imaging microscopy). Real-time transcription was measured by FLIM-FRET, which was detected by the decrease in donor lifetime resulting from ligand binding to IMAGEtags that were newly synthesized from the activated GAL1 promoter. The FRET signal was specific for transcribed IMAGEtags.

  5. INFORMATION NETWORKS TECHNOLOGY MANAGEMENT Spring 2015

    E-Print Network [OSTI]

    MSIS 5623 INFORMATION NETWORKS TECHNOLOGY MANAGEMENT Spring 2015 Spears School of Business Oklahoma State University Instructor: Dr. Jeretta Horn Nord, Professor Management Science and Information Systems Classroom: Online Class: http://oc.okstate.edu Contact Information: Office: Business 223 Stillwater Email

  6. Assessment of offsite, real-time dose measurement systems for emergency situations

    SciTech Connect (OSTI)

    Maeck, W.J.; Hoffman, L.G.; Staples, B.A.; Keller, J.H.

    1982-04-01

    An evaluation is made of the effectiveness of fixed, real-time monitoring systems around nuclear power stations in determining the magnitude of unmonitored releases. The effects of meteorological conditions on the accuracy with which the magnitude of unmonitored releases is determined and the uncertainties inherent in defining these meteorological conditions are discussed. The number and placement of fixed field detectors in a system is discussed, and the data processing equipment required to convert field detector output data into release rate information is described. Cost data relative to the purchase and installation of specific systems are given, as well as the characteristics and information return for a system purchased at an arbitrary cost.

  7. Development plan for an advanced drilling system with real-time diagnostics (Diagnostics-While-Drilling)

    SciTech Connect (OSTI)

    FINGER,JOHN T.; MANSURE,ARTHUR J.; PRAIRIE,MICHAEL R.; GLOWKA,D.A.

    2000-02-01

    This proposal provides the rationale for an advanced system called Diagnostics-while-drilling (DWD) and describes its benefits, preliminary configuration, and essential characteristics. The central concept is a closed data circuit in which downhole sensors collect information and send it to the surface via a high-speed data link, where it is combined with surface measurements and processed through drilling advisory software. The driller then uses this information to adjust the drilling process, sending control signals back downhole with real-time knowledge of their effects on performance. The report presents background of related previous work, and defines a Program Plan for US Department of Energy (DOE), university, and industry cooperation.

  8. DOE REAL-TIME SEISMIC MONITORING AT ENHANCED GEOTHERMAL SYSTEM SITES | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePower VenturesInformation9) Wind FarmEnergy Information REAL-TIME

  9. Real-Time Water Quality Management in the Grassland Water District

    SciTech Connect (OSTI)

    Quinn, Nigel W.T.; Hanna, W. Mark; Hanlon, Jeremy S.; Burns, Josphine R.; Taylor, Christophe M.; Marciochi, Don; Lower, Scott; Woodruff, Veronica; Wright, Diane; Poole, Tim

    2004-12-10

    The purpose of the research project was to advance the concept of real-time water quality management in the San Joaquin Basin by developing an application to drainage of seasonal wetlands in the Grassland Water District. Real-time water quality management is defined as the coordination of reservoir releases, return flows and river diversions to improve water quality conditions in the San Joaquin River and ensure compliance with State water quality objectives. Real-time water quality management is achieved through information exchange and cooperation between shakeholders who contribute or withdraw flow and salt load to or from the San Joaquin River. This project complements a larger scale project that was undertaken by members of the Water Quality Subcommittee of the San Joaquin River Management Program (SJRMP) and which produced forecasts of flow, salt load and San Joaquin River assimilative capacity between 1999 and 2003. These forecasts can help those entities exporting salt load to the River to develop salt load targets as a mechanism for improving compliance with salinity objectives. The mass balance model developed by this project is the decision support tool that helps to establish these salt load targets. A second important outcome of this project was the development and application of a methodology for assessing potential impacts of real-time wetland salinity management. Drawdown schedules are typically tied to weather conditions and are optimized in traditional practices to maximize food sources for over-wintering wildfowl as well as providing a biological control (through germination temperature) of undesirable weeds that compete with the more proteinaceous moist soil plants such as swamp timothy, watergrass and smartweed. This methodology combines high resolution remote sensing, ground-truthing vegetation surveys using established survey protocols and soil salinity mapping using rapid, automated electromagnetic sensor technology. This survey methodology could be complemented with biological surveys of bird use and invertebrates to produce a robust long-term monitoring strategy for habitat health and sustainability.

  10. Real-time nonlinear optimization as a generalized equation.

    SciTech Connect (OSTI)

    Zavala, V. M.; Anitescu, M. (Mathematics and Computer Science)

    2010-11-11

    We establish results for the problem of tracking a time-dependent manifold arising in real-time optimization by casting this as a parametric generalized equation. We demonstrate that if points along a solution manifold are consistently strongly regular, it is possible to track the manifold approximately by solving a single linear complementarity problem (LCP) at each time step. We derive sufficient conditions guaranteeing that the tracking error remains bounded to second order with the size of the time step even if the LCP is solved only approximately. We use these results to derive a fast, augmented Lagrangian tracking algorithm and demonstrate the developments through a numerical case study.

  11. Near real time vapor detection and enhancement using aerosol adsorption

    DOE Patents [OSTI]

    Novick, V.J.; Johnson, S.A.

    1999-08-03

    A vapor sample detection method is described where the vapor sample contains vapor and ambient air and surrounding natural background particles. The vapor sample detection method includes the steps of generating a supply of aerosol that have a particular effective median particle size, mixing the aerosol with the vapor sample forming aerosol and adsorbed vapor suspended in an air stream, impacting the suspended aerosol and adsorbed vapor upon a reflecting element, alternatively directing infrared light to the impacted aerosol and adsorbed vapor, detecting and analyzing the alternatively directed infrared light in essentially real time using a spectrometer and a microcomputer and identifying the vapor sample. 13 figs.

  12. Real-time human collaboration monitoring and intervention

    DOE Patents [OSTI]

    Merkle, Peter B. (Sandia Park, NM); Johnson, Curtis M. (Sandia Park, NM); Jones, Wendell B. (Albuquerque, NM); Yonas, Gerold (Albuquerque, NM); Doser, Adele B. (Albuquerque, NM); Warner, David J. (Rancho Santa Fe, CA)

    2010-07-13

    A method of and apparatus for monitoring and intervening in, in real time, a collaboration between a plurality of subjects comprising measuring indicia of physiological and cognitive states of each of the plurality of subjects, communicating the indicia to a monitoring computer system, with the monitoring computer system, comparing the indicia with one or more models of previous collaborative performance of one or more of the plurality of subjects, and with the monitoring computer system, employing the results of the comparison to communicate commands or suggestions to one or more of the plurality of subjects.

  13. Continuous real-time measurement of aqueous cyanide

    DOE Patents [OSTI]

    Rosentreter, Jeffrey J.; Gering, Kevin L.

    2007-03-06

    This invention provides a method and system capable of the continuous, real-time measurement of low concentrations of aqueous free cyanide (CN) using an on-line, flow through system. The system is based on the selective reactivity of cyanide anions and the characteristically nonreactive nature of metallic gold films, wherein this selective reactivity is exploited as an indirect measurement for aqueous cyanide. In the present invention the dissolution of gold, due to the solubilization reaction with the analyte cyanide anion, is monitored using a piezoelectric microbalance contained within a flow cell.

  14. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMassR&D100 Winners * Impacts onReal-Time Chemical Imaging of Bacterial Biofilm

  15. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) by Carbon-RichProton DeliveryRadioactiveRare |Real-Time Chemical Imaging

  16. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) by Carbon-RichProton DeliveryRadioactiveRare |Real-Time Chemical

  17. Time optimal information transfer in spintronics networks

    E-Print Network [OSTI]

    Frank Langbein; Sophie Schirmer; Edmond Jonckheere

    2015-08-04

    Propagation of information encoded in spin degrees of freedom through networks of coupled spins enables important applications in spintronics and quantum information processing. We study control of information propagation in networks of spin-$\\tfrac{1}{2}$ particles with uniform nearest neighbour couplings forming a ring with a single excitation in the network as simple prototype of a router for spin-based information. Specifically optimising spatially distributed potentials, which remain constant during information transfer, simplifies the implementation of the routing scheme. However, the limited degrees of freedom makes finding a control that maximises the transfer probability in a short time difficult. We show that the structure of the eigenvalues and eigenvectors must fulfill a specific condition to be able to maximise the transfer fidelity, and demonstrate that a specific choice among the many potential structures that fulfill this condition significantly improves the solutions found by optimal control.

  18. Information transfer in community structured multiplex networks

    E-Print Network [OSTI]

    Solé-Ribalta, Albert; Gómez, Sergio; Arenas, Alex

    2015-01-01

    The study of complex networks that account for different types of interactions has become a subject of interest in the last few years, specially because its representational power in the description of users interactions in diverse online social platforms (Facebook, Twitter, Instagram, etc.). The mathematical description of these interacting networks has been coined under the name of multilayer networks, where each layer accounts for a type of interaction. It has been shown that diffusive processes on top of these networks present a phenomenology that cannot be explained by the naive superposition of single layer diffusive phenomena but require the whole structure of interconnected layers. Nevertheless, the description of diffusive phenomena on multilayer networks has obviated the fact that social networks have strong mesoscopic structure represented by different communities of individuals driven by common interests, or any other social aspect. In this work, we study the transfer of information in multilayer ...

  19. Initial Studies Toward Real-Time Transmission Path Rating

    SciTech Connect (OSTI)

    Singh, Ruchi; Diao, Ruisheng; Cai, Niannian; Huang, Zhenyu; Tuck, Brian; Guo, Xinxin

    2012-07-26

    Demand continues to increase while transmission line construction is being constrained by multiple factors— economic, environmental, and political. Effective and efficient utilization of transmission lines is thus of great importance in an open access environment. Large blocks of power are transferred from areas with inexpensive generation to heavy load demand areas or areas with high generation costs. This results in some transmission paths being loaded closer to their path ratings, which limits further power transfer between areas. Traditionally, rating of important paths was determined off line by assuming the worst-case study scenario; once determined, it could be used for years. With increasing uncertainty arising from rapid growth of renewable energy and smart technologies, path rating studies are needed in near-real time to account for the latest system status and support a reliable and economic power grid. This paper adopts a simplified procedure based on standards of the North American Electric Reliability Corporation (NERC) to determine total transfer capability (TTC) or transfer limit for the purpose of demonstrating the benefits and necessity of real-time path rating. Initial studies are conducted to compute TTC of a two-area test system and a 39-bus test system. Results indicate that path rating can be significantly affected by loading conditions, generator schedules, system topology and other factors.

  20. A Study of "Churn" in Tweets and Real-Time Search Queries Jimmy Lin and Gilad Mishne

    E-Print Network [OSTI]

    Daume III, Hal

    A Study of "Churn" in Tweets and Real-Time Search Queries Jimmy Lin and Gilad Mishne Twitter, Inc in the next. Informally, we call this phenomenon "churn". Our interest in analyzing churn stems from that the underlying distributions change rapidly? In this pa- per, we present an analysis of tweet and query churn

  1. Power Management Mechanism Exploiting Network and Video Information over Wireless

    E-Print Network [OSTI]

    Bouras, Christos

    Power Management Mechanism Exploiting Network and Video Information over Wireless Links Christos- layer information from higher network layers may be utilized for more efficient power management that fine- tune transmission power according to information received from the transport (feedback reports

  2. Power Management Mechanism Exploiting Network and Video Information over Wireless

    E-Print Network [OSTI]

    Bouras, Christos

    Power Management Mechanism Exploiting Network and Video Information over Wireless Links Christos information from higher network layers may be utilized for more efficient power management in wireless- tune transmission power according to information received from the transport (feedback reports from

  3. Concept Paper for Real-Time Temperature and Water QualityManagement for San Joaquin River Riparian Habitat Restoration

    SciTech Connect (OSTI)

    Quinn, Nigel W.T.

    2004-12-20

    The San Joaquin River Riparian Habitat Restoration Program (SJRRP) has recognized the potential importance of real-time monitoring and management to the success of the San Joaquin River (SJR) restoration endeavor. The first step to realizing making real-time management a reality on the middle San Joaquin River between Friant Dam and the Merced River will be the installation and operation of a network of permanent telemetered gauging stations that will allow optimization of reservoir releases made specifically for fish water temperature management. Given the limited reservoir storage volume available to the SJJRP, this functionality will allow the development of an adaptive management program, similar in concept to the VAMP though with different objectives. The virtue of this approach is that as management of the middle SJR becomes more routine, additional sensors can be added to the sensor network, initially deployed, to continue to improve conditions for anadromous fish.

  4. High-Energy, Pulsed-Laser Diagnostics for Real-Time Measurements...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    High-Energy, Pulsed-Laser Diagnostics for Real-Time Measurements of Reciprocating Engine PM Emissions High-Energy, Pulsed-Laser Diagnostics for Real-Time Measurements of...

  5. MODELING REAL-TIME HUMAN-AUTOMATION COLLABORATIVE SCHEDULING OF UNMANNED VEHICLES

    E-Print Network [OSTI]

    Cummings, Mary "Missy"

    MODELING REAL-TIME HUMAN-AUTOMATION COLLABORATIVE SCHEDULING OF UNMANNED VEHICLES by ANDREW S, Humans and Automation Laboratory Certified by;3 MODELING REAL-TIME HUMAN-AUTOMATION COLLABORATIVE SCHEDULING OF UNMANNED VEHICLES by Andrew S. Clare

  6. On the stability of wholesale electricity markets under real-time pricing

    E-Print Network [OSTI]

    Roozbehani, Mardavij

    The paper proposes a mathematical model for the dynamic evolution of supply, demand, and clearing prices under a class of real-time pricing mechanisms characterized by passing on the real-time wholesale prices to the end ...

  7. A Library of SIMULINK Blocks for Real-Time Control of HEV Traction John Chiasson1

    E-Print Network [OSTI]

    Tolbert, Leon M.

    of Automotive Engineers, Inc. ABSTRACT This paper describes the development of advanced control and modeling. REAL-TIME TEST BED A real-time computing platform has been developed as a test bed to efficiently

  8. The Design of a Synthesis Tool for Interrupt-based Real Time Embedded Software

    E-Print Network [OSTI]

    Hsiung, Pao-Ann

    to accomplish some dedicated set of periodic tasks within real time deadlines. Some examples include avionics Thermometer with Microcontroller (DTM) and a Real-time Stepping Motor Control (RSMC) to demonstrate

  9. A Real-Time Procedural Shading System for Programmable Graphics Hardware

    E-Print Network [OSTI]

    Stanford University

    A Real-Time Procedural Shading System for Programmable Graphics Hardware Kekoa Proudfoot£ Stanford University Abstract Real-time graphics hardware is becoming programmable, but this programmable hardware one computation frequency. Internally, our system virtualizes limited hardware resources to allow

  10. Real-time Process Monitoring and Temperature Mapping of the 3D...

    Office of Scientific and Technical Information (OSTI)

    Real-time Process Monitoring and Temperature Mapping of the 3D Polymer Printing Process Citation Details In-Document Search Title: Real-time Process Monitoring and Temperature...

  11. Real Time Analysis of Thermal Activation via Sphaleron Transitions

    E-Print Network [OSTI]

    D. Boyanovsky; C. A. de Carvalho

    1993-06-07

    We study the process of thermal activation mediated by sphaleron transitions by analyzing the real-time dynamics of the decay out of equilibrium in a $1+1$ dimensional field theory with a metastable state. The situation considered is that of a rapid supercooling in which the system is trapped in a metastable state at a temperature larger than the mass of the quanta, but smaller than the energy to create a critical droplet. The initial density matrix is evolved in time and the nucleation rate (probability current at the saddle point) is computed. The nucleation rate is {\\it time dependent}, vanishing at early times, reaching a maximum at a time $t \\approx 1/m$ with $m$ the mass of quanta in the metastable state, and decreasing at long times as a consequence of unitarity. An estimate for the average number of particles of ``true vacuum'' produced as a function of time during the nucleation process is obtained.

  12. Smart preamplifier for real-time turbine meter diagnostics

    SciTech Connect (OSTI)

    Breter, J.C.

    1995-12-31

    A new, dual-purpose device for turbine meters, which functions as a traditional signal preamplifier and accomplishes real-time performance diagnostics, is now available. This smart preamplifier (patent pending) utilizes high speed microprocessor technology to continuously monitor and analyze the rotation of a turbine meter rotor. Continuous monitoring allows the device to detect rotational anomalies that can lead to erroneous measurements as they occur. The smart preamplifier works on liquid or gas turbine meters that use a variable reluctance pickup coil for signal generation. This paper will discuss the technology and capabilities of the smart preamplifier. To simplify this discussion, it is assumed that the signal generated will be via a non-rimmed rotor. Thus, the term ``blade`` is used throughout. However, all discussions relevant to signal generation are also true for a rimmed rotor using either buttons or slots for signal generation.

  13. RTDB: A memory resident real-time object database

    SciTech Connect (OSTI)

    Jerzy M. Nogiec; Eugene Desavouret

    2003-06-04

    RTDB is a fast, memory-resident object database with built-in support for distribution. It constitutes an attractive alternative for architecting real-time solutions with multiple, possibly distributed, processes or agents sharing data. RTDB offers both direct and navigational access to stored objects, with local and remote random access by object identifiers, and immediate direct access via object indices. The database supports transparent access to objects stored in multiple collaborating dispersed databases and includes a built-in cache mechanism that allows for keeping local copies of remote objects, with specifiable invalidation deadlines. Additional features of RTDB include a trigger mechanism on objects that allows for issuing events or activating handlers when objects are accessed or modified and a very fast, attribute based search/query mechanism. The overall architecture and application of RTDB in a control and monitoring system is presented.

  14. Real-Time Bioluminescent Tracking of Cellular Population Dynamics

    SciTech Connect (OSTI)

    Close, Dan; Sayler, Gary Steven; Xu, Tingting; Ripp, Steven Anthony

    2014-01-01

    Cellular population dynamics are routinely monitored across many diverse fields for a variety of purposes. In general, these dynamics are assayed either through the direct counting of cellular aliquots followed by extrapolation to the total population size, or through the monitoring of signal intensity from any number of externally stimulated reporter proteins. While both viable methods, here we describe a novel technique that allows for the automated, non-destructive tracking of cellular population dynamics in real-time. This method, which relies on the detection of a continuous bioluminescent signal produced through expression of the bacterial luciferase gene cassette, provides a low cost, low time-intensive means for generating additional data compared to alternative methods.

  15. Method and apparatus for real time weld monitoring

    DOE Patents [OSTI]

    Leong, Keng H. (Lemont, IL); Hunter, Boyd V. (Bolingbrook, IL)

    1997-01-01

    An improved method and apparatus are provided for real time weld monitoring. An infrared signature emitted by a hot weld surface during welding is detected and this signature is compared with an infrared signature emitted by the weld surface during steady state conditions. The result is correlated with weld penetration. The signal processing is simpler than for either UV or acoustic techniques. Changes in the weld process, such as changes in the transmitted laser beam power, quality or positioning of the laser beam, change the resulting weld surface features and temperature of the weld surface, thereby resulting in a change in the direction and amount of infrared emissions. This change in emissions is monitored by an IR sensitive detecting apparatus that is sensitive to the appropriate wavelength region for the hot weld surface.

  16. Software realization of real-time neutrons and {gamma}-rays pulse shape discrimination using CUDA platform

    SciTech Connect (OSTI)

    Kolbasin, V. A.; Ivanov, A. I.; Pedash, V. Y. [Inst. for Scintillation Materials NAS of Ukraine, Kharkov (Ukraine)

    2011-07-01

    The two pulse shape discrimination methods were implemented in real-time. The pulse gradient analysis method was implemented programmatically on PC. The method based on artificial neural network was programmatically implemented using CUDA platform. It is shown that both implementations can provide up to 10{sup 6} pulses per second processing performance. The results for pulse shape discrimination using polycrystalline stilbene and LiF detectors were shown. (authors)

  17. THE USE OF A FORMAL SIMULATOR TO VERIFY A SIMPLE REAL TIME CONTROL PROGRAM

    E-Print Network [OSTI]

    Boyer, Robert Stephen

    that a simple, real time control program keeps a vehicle on a straightline course in a variable crosswind

  18. Embedded and Real-time Systems Classes in Traditional and Distance Education Format

    E-Print Network [OSTI]

    Thornton, Mitchell

    . In particular, we describe embedded and real-time systems classes that are based upon the ARM® and Arduino

  19. Real-time system verification techniques based on abstraction/deduction and model checking

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Real-time system verification techniques based on abstraction/deduction and model checking Eun in or- der to obtain a powerful and highly automatic verification environment for real-time systems. One-Young.Kang@loria.fr Abstract. Our research focuses on verification techniques for real-time systems based on predicate

  20. Tools for Real-Time UML: Formal Verification and Code Synthesis

    E-Print Network [OSTI]

    David, Alexandre

    and analysis of real-time systems. The model has a simple and clear semantics, and is powerful enough to describe the characteristic features of real-time systems, such as scheduling algorithms, timers, timeouts for modeling, analysis, and code synthesis of real-time systems. Figure 1 illustrates the current position

  1. Tools for Real-Time UML: Formal Veri cation and Code Synthesis

    E-Print Network [OSTI]

    David, Alexandre

    semantics, and is powerful enough to describe the characteristic features of real-time systems appropriate for high-level design and analysis of real-time systems. The model has a simple and clear is a uniform framework for modeling, analysis, and code synthesis of real-time systems. Figure 1 illustrates

  2. On Utility Accrual Processor Scheduling with Wait-Free Synchronization for Embedded Real-Time Software

    E-Print Network [OSTI]

    Ravindran, Binoy

    On Utility Accrual Processor Scheduling with Wait-Free Synchronization for Embedded Real-Time Software ABSTRACT We present the first wait-free utility accrual (UA) real-time scheduling algorithms for embedded real-time systems. UA scheduling algorithms allow application activities to be sub- ject to time/utility

  3. Topographically-Based Real-Time Traffic Anomaly Detection in a Metropolitan Highway System

    E-Print Network [OSTI]

    Grossman, Robert

    Topographically-Based Real-Time Traffic Anomaly Detection in a Metropolitan Highway System Rajmonda metropolitan area. Our Chicago Alert System (CAS) considers both the spatial and temporal aspects of the data of attack, the need for real-time traffic management is crucial. Real-time traffic management encompasses

  4. Analysis of Competitive Electricity Markets under a New Model of Real-Time Retail Pricing with

    E-Print Network [OSTI]

    Bhatia, Sangeeta

    Analysis of Competitive Electricity Markets under a New Model of Real-Time Retail Pricing with Ex@tum.de Abstract--In this paper, we propose a new real-time retail pricing model characterized by ex and robustness properties than pure exant´e pricing. Index Terms--Real-Time Pricing, Market Stability, Economic

  5. Conserving Energy in Real-Time Storage Systems with I/O Burstiness

    E-Print Network [OSTI]

    Qin, Xiao

    20 Conserving Energy in Real-Time Storage Systems with I/O Burstiness ADAM MANZANARES, XIAOJUN RUAN of Southern Mississippi Energy conservation has become a critical problem for real-time embedded storage, energy conservation for real-time embedded storage systems is still an open problem. In this arti- cle

  6. Trilliant Networks | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowa (Utility Company) Jump to: navigation,PowerNetworks Jump to: navigation,

  7. Course Information SER 234 Operating Systems and Networking

    E-Print Network [OSTI]

    · · · · · · · · · · · Course Information SER 234 Operating Systems and Networking Catalog Description Fundamentals of operating systems, process management, scheduling, and file management. Network technology, topologies, protocols, application control; network and operating system security. Credit Hours

  8. Abstract--In this paper we describe our efforts to build a Web Services based architecture to support both real-time

    E-Print Network [OSTI]

    to support both real-time and archived geographic data in Geographical Information System (GIS) Grids. We IN GEOGRAPHICAL INFORMATION SERVICE GRIDS A. Open Standards for Geographical Information Systems It is estimated]. This is the major reason for enormous interest from industry and academia to develop Geographic Information System

  9. Abstract--We describe our efforts to build a Web Services based architecture to support access to both real-time and

    E-Print Network [OSTI]

    to both real-time and archived geographic data in Geographical Information System (GIS) Grids. We have IN GEOGRAPHICAL INFORMATION SERVICE GRIDS A. Open Standards for Geographical Information Systems It is estimated]. This is the major reason for enormous interest from industry and academia to develop Geographic Information System

  10. Direct Real-Time Detection of Vapors from Explosive Compounds

    SciTech Connect (OSTI)

    Ewing, Robert G.; Clowers, Brian H.; Atkinson, David A.

    2013-10-03

    The real-time detection of vapors from low volatility explosives including PETN, tetryl, RDX and nitroglycerine along with various compositions containing these substances is demonstrated. This was accomplished with an atmospheric flow tube (AFT) using a non-radioactive ionization source and coupled to a mass spectrometer. Direct vapor detection was demonstrated in less than 5 seconds at ambient temperature without sample pre-concentration. The several seconds of residence time of analytes in the AFT provides a significant opportunity for reactant ions to interact with analyte vapors to achieve ionization. This extended reaction time, combined with the selective ionization using the nitrate reactant ions (NO3- and NO3-•HNO3), enables highly sensitive explosives detection. Observed signals from diluted explosive vapors indicate detection limits below 10 ppqv using selected ion monitoring (SIM) of the explosive-nitrate adduct at m/z 349, 378, 284 and 289 for tetryl, PETN, RDX and NG respectively. Also provided is a demonstration of the vapor detection from 10 different energetic formulations, including double base propellants, plastic explosives and commercial blasting explosives using SIM for the NG, PETN and RDX product ions.

  11. Real-Time Flavor Tagging Algorithms in ATLAS

    E-Print Network [OSTI]

    Hetherly, Jeffrey Wayne; The ATLAS collaboration; Zivkovic, Lidija

    2015-01-01

    In high-energy physics experiments, online selection is crucial to select interesting collisions from the large data volume. ATLAS b-jet triggers are designed to identify heavy-flavour content in real-time and provide the only option to efficiently record events with fully hadronic final states containing b-jets. In doing so, two different, but related, challenges are faced. The physics goal is to optimise as far as possible the rejection of light jets, while retaining a high efficiency on selecting b-jets and maintaining affordable trigger rates without raising jet energy thresholds. This results in a challenging computing task, as tracks and their corresponding vertices must be reconstructed and analysed for each jet above the desired threshold, regardless of the increasingly adverse pile-up conditions. We present an overview of the ATLAS strategy for online b-jet selection for the LHC Run 2, including the use of novel methods and sophisticated algorithms designed to face the above mentioned challenges. A f...

  12. Real-time flavour tagging selection in ATLAS

    E-Print Network [OSTI]

    Bertella, Claudia; The ATLAS collaboration

    2015-01-01

    In high-energy physics experiments, online selection is crucial to identify the few interesting collisions from the large data volume processed. In the overall ATLAS trigger strategy, b-jet triggers are designed to identify heavy-flavor content in real-time and, in particular, provide the only option to efficiently record events with fully hadronic final states containing b-jets. In doing so, two different, but related, challenges are faced. The physics goal is to optimise as far as possible the rejection of light jets from QCD processes, while retaining a high efficiency on selecting jets from beauty, while maintaining affordable trigger rates without raising jet energy thresholds. This maps into a challenging computing task, as charged tracks and their corresponding vertexes must be reconstructed and analysed for each jet above the desired threshold, regardless of the increasingly harsh pile-up conditions. The performance of b-jet triggers during the LHC Run 1 data-taking campaigns is presented, together wi...

  13. Real time detection and correction of distribution feeder operational problems

    SciTech Connect (OSTI)

    Subramanian, A.K.; Huang, J.C.

    1995-12-31

    The paper presents a new technique that detects and corrects distribution operational problems using closed loop control of substation transformers, capacitors and reactors by an online computer. This allows the distribution system to be operated close to its capacity without sacrificing the quality of power supply. Such operations help defer the additional cost of installing new substations. The technique integrates the Distribution Feeder Analysis (DFA) and the Distribution Substation Control (DSC) functions to achieve this. The DFA function provides the topology and power flow results for the feeders using the substation real time measurements. It does not require feeder section measurements. The realtime feeder results are used in detecting any currently existing feeder operational problems such as feeder section voltages and currents outside their limits. The detected feeder problems are transformed into substation distribution bus objectives and then corrected by the DSC function using controls available at the substation. The DSC function has been performing successfully for several years at Potomac Electric Power Company (PEPCO) in Washington, D.C. It uses a closed loop control scheme that controls the substation transformer taps and shunt capacitor and reactor breakers and optimizes the substation operation. By combining the DFA and DSC functions into a single function and with proper transformation of feeder problems into substation objectives, a new closed loop control scheme for the substation controls is achieved. This scheme corrects the detected feeder problems and optimizes the substation operation. This technique is implemented and tested using the actual substation and feeder models of PEPCO.

  14. Real-time flavour tagging selection in ATLAS

    E-Print Network [OSTI]

    Bogavac, Danijela; The ATLAS collaboration

    2015-01-01

    In high-energy physics experiments, online selection is crucial to identify the few interesting collisions from the large data volume processed. In the overall ATLAS trigger strategy, b-jet triggers are designed to identify heavy-flavour content in real-time and, in particular, provide the only option to efficiently record events with fully hadronic final states containing b-jets. In doing so, two different, but related, challenges are faced. The physics goal is to optimise as far as possible the rejection of light jets from multijet processes, while retaining a high efficiency on selecting jets from beauty, and maintaining affordable trigger rates without raising jet energy thresholds. This maps into a challenging computing task, as charged tracks and their corresponding vertexes must be reconstructed and analysed for each jet above the desired threshold, regardless of the increasingly harsh pile-up conditions. The performance of b-jet triggers during the LHC Run 1 data-taking campaigns is presented, togethe...

  15. Real-time multi-mode neutron multiplicity counter

    DOE Patents [OSTI]

    Rowland, Mark S; Alvarez, Raymond A

    2013-02-26

    Embodiments are directed to a digital data acquisition method that collects data regarding nuclear fission at high rates and performs real-time preprocessing of large volumes of data into directly useable forms for use in a system that performs non-destructive assaying of nuclear material and assemblies for mass and multiplication of special nuclear material (SNM). Pulses from a multi-detector array are fed in parallel to individual inputs that are tied to individual bits in a digital word. Data is collected by loading a word at the individual bit level in parallel, to reduce the latency associated with current shift-register systems. The word is read at regular intervals, all bits simultaneously, with no manipulation. The word is passed to a number of storage locations for subsequent processing, thereby removing the front-end problem of pulse pileup. The word is used simultaneously in several internal processing schemes that assemble the data in a number of more directly useable forms. The detector includes a multi-mode counter that executes a number of different count algorithms in parallel to determine different attributes of the count data.

  16. Real-time algorithm for robust coincidence search

    SciTech Connect (OSTI)

    Petrovic, T.; Vencelj, M.; Lipoglavsek, M.; Gajevic, J.; Pelicon, P.

    2012-10-20

    In in-beam {gamma}-ray spectroscopy experiments, we often look for coincident detection events. Among every N events detected, coincidence search is naively of principal complexity O(N{sup 2}). When we limit the approximate width of the coincidence search window, the complexity can be reduced to O(N), permitting the implementation of the algorithm into real-time measurements, carried out indefinitely. We have built an algorithm to find simultaneous events between two detection channels. The algorithm was tested in an experiment where coincidences between X and {gamma} rays detected in two HPGe detectors were observed in the decay of {sup 61}Cu. Functioning of the algorithm was validated by comparing calculated experimental branching ratio for EC decay and theoretical calculation for 3 selected {gamma}-ray energies for {sup 61}Cu decay. Our research opened a question on the validity of the adopted value of total angular momentum of the 656 keV state (J{sup {pi}} = 1/2{sup -}) in {sup 61}Ni.

  17. GDMN : An Information Management Network for Distributed Systems

    E-Print Network [OSTI]

    Sengupta, Raja

    GDMN : An Information Management Network for Distributed Systems Amit Mahajan {amahajan from the system. 1 Introduction There are many systems that produce and con- sume information at many sites distributed over large geographical areas. Battlefield networks, traffic management systems

  18. Raman Based Process Monitor For Continuous Real-Time Analysis Of High Level Radioactive Waste Components

    SciTech Connect (OSTI)

    Bryan, Samuel A.; Levitskaia, Tatiana G.; Schlahta, Stephan N.

    2008-05-27

    ABSTRACT A new monitoring system was developed at Pacific Northwest National Laboratory (PNNL) to quickly generate real-time data/analysis to facilitate a timely response to the dynamic characteristics of a radioactive high level waste stream. The developed process monitor features Raman and Coriolis/conductivity instrumentation configured for the remote monitoring, MatLab-based chemometric data processing, and comprehensive software for data acquisition/storage/archiving/display. The monitoring system is capable of simultaneously and continuously quantifying the levels of all the chemically significant anions within the waste stream including nitrate, nitrite, phosphate, carbonate, chromate, hydroxide, sulfate, and aluminate. The total sodium ion concentration was also determined independently by modeling inputs from on-line conductivity and density meters. In addition to the chemical information, this monitoring system provides immediate real-time data on the flow parameters, such as flow rate and temperature, and cumulative mass/volume of the retrieved waste stream. The components and analytical tools of the new process monitor can be tailored for a variety of complex mixtures in chemically harsh environments, such as pulp and paper processing liquids, electroplating solutions, and radioactive tank wastes. The developed monitoring system was tested for acceptability before it was deployed for use in Hanford Tank S-109 retrieval activities. The acceptance tests included performance inspection of hardware, software, and chemometric data analysis to determine the expected measurement accuracy for the different chemical species that are encountered during S-109 retrieval.

  19. Raman Based Process Monitor for Continuous Real-Time Analysis Of High Level Radioactive Waste Components

    SciTech Connect (OSTI)

    Bryan, S.; Levitskaia, T.; Schlahta, St. [Pacific Northwest National Laboratory, Richland, Washington (United States)

    2008-07-01

    A new monitoring system was developed at Pacific Northwest National Laboratory (PNNL) to quickly generate real-time data/analysis to facilitate a timely response to the dynamic characteristics of a radioactive high level waste stream. The developed process monitor features Raman and Coriolis/conductivity instrumentation configured for the remote monitoring, MatLab-based chemometric data processing, and comprehensive software for data acquisition/storage/archiving/display. The monitoring system is capable of simultaneously and continuously quantifying the levels of all the chemically significant anions within the waste stream including nitrate, nitrite, phosphate, carbonate, chromate, hydroxide, sulfate, and aluminate. The total sodium ion concentration was also determined independently by modeling inputs from on-line conductivity and density meters. In addition to the chemical information, this monitoring system provides immediate real-time data on the flow parameters, such as flow rate and temperature, and cumulative mass/volume of the retrieved waste stream. The components and analytical tools of the new process monitor can be tailored for a variety of complex mixtures in chemically harsh environments, such as pulp and paper processing liquids, electroplating solutions, and radioactive tank wastes. The developed monitoring system was tested for acceptability before it was deployed for use in Hanford Tank S-109 retrieval activities. The acceptance tests included performance inspection of hardware, software, and chemometric data analysis to determine the expected measurement accuracy for the different chemical species that are encountered during S-109 retrieval. (authors)

  20. Optimization Based Data Mining Approah for Forecasting Real-Time Energy Demand

    SciTech Connect (OSTI)

    Omitaomu, Olufemi A; Li, Xueping; Zhou, Shengchao

    2015-01-01

    The worldwide concern over environmental degradation, increasing pressure on electric utility companies to meet peak energy demand, and the requirement to avoid purchasing power from the real-time energy market are motivating the utility companies to explore new approaches for forecasting energy demand. Until now, most approaches for forecasting energy demand rely on monthly electrical consumption data. The emergence of smart meters data is changing the data space for electric utility companies, and creating opportunities for utility companies to collect and analyze energy consumption data at a much finer temporal resolution of at least 15-minutes interval. While the data granularity provided by smart meters is important, there are still other challenges in forecasting energy demand; these challenges include lack of information about appliances usage and occupants behavior. Consequently, in this paper, we develop an optimization based data mining approach for forecasting real-time energy demand using smart meters data. The objective of our approach is to develop a robust estimation of energy demand without access to these other building and behavior data. Specifically, the forecasting problem is formulated as a quadratic programming problem and solved using the so-called support vector machine (SVM) technique in an online setting. The parameters of the SVM technique are optimized using simulated annealing approach. The proposed approach is applied to hourly smart meters data for several residential customers over several days.

  1. Center for International Earth Science Information Network Columbia University

    E-Print Network [OSTI]

    Columbia University

    Center for International Earth Science Information Network Columbia University CIESIN Data and Information Management Policy CIESIN considers data and information resources to be organizational assets records on the status of all data or information created, developed, or acquired for dissemination

  2. Quasi real time in vivo dosimetry for VMAT

    SciTech Connect (OSTI)

    Fidanzio, A.; Azario, L.; U.O.C di Fisica Sanitaria, Università Cattolica del Sacro Cuore, Rome 00168; Istituto Nazionale di Fisica Nucleare , Sezione di Roma Tre, Rome 00146 ; Porcelli, A.; Greco, F.; Istituto Nazionale di Fisica Nucleare , Sezione di Roma Tre, Rome 00146 ; Cilla, S.; Grusio, M.; Balducci, M.; Valentini, V.; Piermattei, A.

    2014-06-15

    Purpose: Results about the feasibility of a method for quasi real timein vivo dosimetry (IVD) at the isocenter point for volumetric modulated arc therapy (VMAT) are here reported. The method is based on correlations between the EPID signal and the dose on the beam central axis. Moreover, the ?-analysis of EPID images was adopted to verify off-axis reproducibility of fractionated plan delivery. Methods: An algorithm to reconstructin vivo the isocenter dose, D{sub iso}, for RapidArc treatments has been developed. 20 VMAT plans, optimized with two opposite arcs, for prostate, pancreas, and head treatments have been delivered by a Varian linac both to a conic PMMA phantom with elliptical section and to patients. The ratios R between reconstructed D{sub iso} and the planned doses were determined for phantom and patient irradiations adopting an acceptance criterion of ±5%. In total, 40 phantom checks and 400 patient checks were analyzed. Moreover, 3% and 3 mm criteria were adopted for portal image ?-analysis to assess patient irradiation reproducibility. Results: The average ratio R, between reconstructed and planned doses for the PMMA phantom irradiations was equal to 1.007 ± 0.024. When the IVD method was applied to the 20 patients, the average R ratio was equal to 1.003 ± 0.017 and 96% of the tests were within the acceptance criteria. The portal image ?-analysis supplied 88% of the tests within the pass rates ?{sub mean} ? 0.4 and P{sub ?<1} ? 98%. All the warnings were understood comparing the CT and the cone beam CT images and in one case a patient's setup error was detected and corrected for the successive fractions. Conclusions: This preliminary experience suggests that the method is able to detect dosimetric errors in quasi real time at the end of the therapy session. The authors intend to extend this procedure to other pathologies with the integration of in-room imaging verification by cone beam CT.

  3. Long-Range Untethered Real-Time Live Gas Main Robotic Inspection System

    SciTech Connect (OSTI)

    Hagen Schempf; Daphne D'Zurko

    2004-10-31

    Under funding from the Department of Energy (DOE) and the Northeast Gas Association (NGA), Carnegie Mellon University (CMU) developed an untethered, wireless remote controlled inspection robot dubbed Explorer. The project entailed the design and prototyping of a wireless self-powered video-inspection robot capable of accessing live 6- and 8-inch diameter cast-iron and steel mains, while traversing turns and Ts and elbows under real-time control with live video feedback to an operator. The design is that of a segmented actively articulated and wheel-leg powered robot design, with fisheye imaging capability and self-powered battery storage and wireless real-time communication link. The prototype was functionally tested in an above ground pipe-network, in order to debug all mechanical, electrical and software subsystems, and develop the necessary deployment and retrieval, as well as obstacle-handling scripts. A pressurized natural gas test-section was used to certify it for operation in natural gas at up to 60 psig. Two subsequent live-main field-trials in both cast-iron and steel pipe, demonstrated its ability to be safely launched, operated and retrieved under real-world conditions. The system's ability to safely and repeatably exidrecover from angled and vertical launchers, traverse multi-thousand foot long pipe-sections, make T and varied-angle elbow-turns while wirelessly sending live video and handling command and control messages, was clearly demonstrated. Video-inspection was clearly shown to be a viable tool to understand the state of this critical buried infrastructure, irrespective of low- (cast-iron) or high-pressure (steel) conditions. This report covers the different aspects of specifications, requirements, design, prototyping, integration and testing and field-trialing of the Explorer platform.

  4. Real-Time Active Cosmic Neutron Background Reduction Methods

    SciTech Connect (OSTI)

    Mukhopadhyay, Sanjoy; Maurer, Richard; Wolff, Ronald; Mitchell, Stephen; Guss, Paul

    2013-09-01

    Neutron counting using large arrays of pressurized 3He proportional counters from an aerial system or in a maritime environment suffers from the background counts from the primary cosmic neutrons and secondary neutrons caused by cosmic ray?induced mechanisms like spallation and charge-exchange reaction. This paper reports the work performed at the Remote Sensing Laboratory–Andrews (RSL-A) and results obtained when using two different methods to reduce the cosmic neutron background in real time. Both methods used shielding materials with a high concentration (up to 30% by weight) of neutron-absorbing materials, such as natural boron, to remove the low-energy neutron flux from the cosmic background as the first step of the background reduction process. Our first method was to design, prototype, and test an up-looking plastic scintillator (BC-400, manufactured by Saint Gobain Corporation) to tag the cosmic neutrons and then create a logic pulse of a fixed time duration (~120 ?s) to block the data taken by the neutron counter (pressurized 3He tubes running in a proportional counter mode). The second method examined the time correlation between the arrival of two successive neutron signals to the counting array and calculated the excess of variance (Feynman variance Y2F)1 in the neutron count distribution from Poisson distribution. The dilution of this variance from cosmic background values ideally would signal the presence of man-made neutrons.2 The first method has been technically successful in tagging the neutrons in the cosmic-ray flux and preventing them from being counted in the 3He tube array by electronic veto—field measurement work shows the efficiency of the electronic veto counter to be about 87%. The second method has successfully derived an empirical relationship between the percentile non-cosmic component in a neutron flux and the Y2F of the measured neutron count distribution. By using shielding materials alone, approximately 55% of the neutron flux from man-made sources like 252Cf or Am-Be was removed.

  5. Real-time shape approximation and 5-D fingerprinting of single proteins

    E-Print Network [OSTI]

    Yusko, Erik C; Eggenberger, Olivia; Houghtaling, Jared; Rollings, Ryan C; Walsh, Nathan C; Nandivada, Santoshi; Pindrus, Mariya; Hall, Adam R; Sept, David; Li, Jiali; Kalonia, Devendra S; Mayer, Michael

    2015-01-01

    This work exploits the zeptoliter sensing volume of electrolyte-filled nanopores to determine, simultaneously and in real time, the approximate shape, volume, charge, rotational diffusion coefficient, and dipole moment of individual proteins. We have developed the theory for a quantitative understanding and analysis of modulations in ionic current that arise from rotational dynamics of single proteins as they move through the electric field inside a nanopore. The resulting multi-parametric information raises the possibility to characterize, identify, and quantify individual proteins and protein complexes in a mixture. This approach interrogates single proteins in solution and determines parameters such as the approximate shape and dipole moment, which are excellent protein descriptors and cannot be obtained otherwise from single protein molecules in solution. Taken together, this five-dimensional characterization of biomolecules at the single particle level has the potential for instantaneous protein identifi...

  6. Graphene Signal Amplification for Sensitive and Real-Time Fluorescence Anisotropy Detection of Small Molecules

    E-Print Network [OSTI]

    Tan, Weihong

    Graphene Signal Amplification for Sensitive and Real-Time Fluorescence Anisotropy Detection graphene oxide (GO) as the signal amplifier. Because of the extraordinarily larger volume of GO

  7. Real-Time Systems Development with SDL and Next Generation Validation Tools

    E-Print Network [OSTI]

    Sinnott, R.O.

    Sinnott,R.O. Proceedings of Real Time and Embedded Systems Workshop, 3-6 December 2001, London, England. IEEE Computer Society Press

  8. Real-Time Particulate Mass Measurements Pre and Post Diesel Particulat...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Pre and Post Diesel Particulate Filters for LIght-Duty Diesel Vehicles Real-Time Particulate Mass Measurements Pre and Post Diesel Particulate Filters for LIght-Duty...

  9. Organizing the Extremely Large LSST Database forReal-Time Astronomical...

    Office of Scientific and Technical Information (OSTI)

    of the LSST Association Pipeline and the database organization strategies we are planning to use to meet the real-time requirements, including data partitioning,...

  10. Real-time sub-Ångstrom...

    Office of Scientific and Technical Information (OSTI)

    Real-time sub-ngstrom imaging of reversible and irreversible conformations in rhodium catalysts and graphene Kisielowski, Christian; Wang,...

  11. Real-time sub- Å ngstrom imaging of reversible and irreversible...

    Office of Scientific and Technical Information (OSTI)

    ngstrom imaging of reversible and irreversible conformations in rhodium catalysts and graphene Title: Real-time sub- ngstrom imaging of reversible and irreversible conformations...

  12. Real-time Crisis Mapping of Natural Disasters using

    E-Print Network [OSTI]

    Middleton, Stuart E.

    and volunteered geographic information (VGI) sources for areas at risk of disaster and match them to geo Geographic Information; VGI; Natural Disaster; Crisis Management ACM Classification Keywords H.2.8 [Database

  13. Real-Time Combined Heat and Power Operational Strategy Using a Hierarchical Optimization Algorithm

    SciTech Connect (OSTI)

    Yun, Kyung Tae; Cho, Heejin; Luck, Rogelio; Mago, Pedro J.

    2011-06-01

    Existing attempts to optimize the operation of Combined Heat and Power (CHP) systems for building applications have two major limitations: the electrical and thermal loads are obtained from historical weather profiles; and the CHP system models ignore transient responses by using constant equipment efficiencies. This paper considers the transient response of a building combined with a hierarchical CHP optimal control algorithm to obtain a real-time integrated system that uses the most recent weather and electric load information. This is accomplished by running concurrent simulations of two transient building models. The first transient building model uses current as well as forecast input information to obtain short term predictions of the thermal and electric building loads. The predictions are then used by an optimization algorithm, i.e., a hierarchical controller, that decides the amount of fuel and of electrical energy to be allocated at the current time step. In a simulation, the actual physical building is not available and, hence, to simulate a real-time environment, a second, building model with similar but not identical input loads are used to represent the actual building. A state-variable feedback loop is completed at the beginning of each time step by copying, i.e., measuring, the state variable from the actual building and restarting the predictive model using these ?measured? values as initial conditions. The simulation environment presented in this paper features nonlinear effects such as the dependence of the heat exchanger effectiveness on their operating conditions. The results indicate that the CHP engine operation dictated by the proposed hierarchical controller with uncertain weather conditions have the potential to yield significant savings when compared to conventional systems using current values of electricity and fuel prices.

  14. An Architecture for Real-Time Warehousing of Scientific Data

    E-Print Network [OSTI]

    Lawrence, Ramon

    . This situation will only get worse as large-scale sensor networks are deployed. The challenge is to build a data is achieved by using a database to store metadata on the raw data, and retrieving data subsets of interest using SQL queries on metadata. The second component is a distributed web platform that transparently

  15. Real-time graphic display utility for nuclear safety applications

    SciTech Connect (OSTI)

    Yang, S.; Huang, X.; Taylor, J.; Stevens, J.; Gerardis, T.; Hsu, A.; McCreary, T.

    2006-07-01

    With the increasing interests in the nuclear energy, new nuclear power plants will be constructed and licensed, and older generation ones will be upgraded for assuring continuing operation. The tendency of adopting the latest proven technology and the fact of older parts becoming obsolete have made the upgrades imperative. One of the areas for upgrades is the older CRT display being replaced by the latest graphics displays running under modern real time operating system (RTOS) with safety graded modern computer. HFC has developed a graphic display utility (GDU) under the QNX RTOS. A standard off-the-shelf software with a long history of performance in industrial applications, QNX RTOS used for safety applications has been examined via a commercial dedication process that is consistent with the regulatory guidelines. Through a commercial survey, a design life cycle and an operating history evaluation, and necessary tests dictated by the dedication plan, it is reasonably confirmed that the QNX RTOS was essentially equivalent to what would be expected in the nuclear industry. The developed GDU operates and communicates with the existing equipment through a dedicated serial channel of a flat panel controller (FPC) module. The FPC module drives a flat panel display (FPD) monitor. A touch screen mounted on the FPD serves as the normal operator interface with the FPC/FPD monitor system. The GDU can be used not only for replacing older CRTs but also in new applications. The replacement of the older CRT does not disturb the function of the existing equipment. It not only provides modern proven technology upgrade but also improves human ergonomics. The FPC, which can be used as a standalone controller running with the GDU, is an integrated hardware and software module. It operates as a single board computer within a control system, and applies primarily to the graphics display, targeting, keyboard and mouse. During normal system operation, the GDU has two sources of data input: a serial interface with field equipment and a serial input from the FPD touch screen. The mechanism for data collection from the field equipment consists of the regular exchange of the data update request messages and target commands sent to the equipment and the update messages returned to the FPC. The data updates from field equipment control displays presented on the graphic pages. Touch screen contacts are decoded to identify physical position that was contacted. If that position corresponds with one of the buttons on the graphic page, the software uses that input to initiate the function defined for the particular button contacted. In this paper, the FPC will be illustrated as a standalone system as well as a module in a dedicated control system. The GDU design concepts and its design flow will be demonstrated. The dedication process of the QNX RTOS needed for the GDU will be highlighted. Finally, the GDU with a specific application example used in one of the nuclear power plants will be presented. (authors)

  16. Efficient Real-Time Time-Dependent Density Functional Theory...

    Office of Scientific and Technical Information (OSTI)

    1180570 GrantContract Number: AC02-05CH11231 Type: Publisher's Accepted Manuscript Journal Name: Physical Review Letters Additional Journal Information: Journal Volume: 114;...

  17. Real-Time Chemical Imaging of Bacterial Biofilm Development

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    chemical-scale information on biofilm phenotype and function, including Berkeley Lab's bioenergy efforts and subsurface biogeochemical studies. Studying Living Cells For...

  18. PREPRINT ACCEPTED BY IEEE TRANSACTIONS ON CYBERNETICS, OCTOBER 2013 1 Tensor Body: Real-time Reconstruction of the

    E-Print Network [OSTI]

    Wolberg, George

    --Real-time 3D reconstruction of the human body has many applications in anthropometry, telecommunications

  19. In8 265 22 of RTAS'97: The 1997 IEEE RealTime Technologyandology 32049 Symposium, Montreal, Canada, June 1997.

    E-Print Network [OSTI]

    introduced ACCORD, an Admission Control and Capacity Over­ load management Real­time Database framework

  20. Technical Report 2009-003 A Testing Theory for Real-Time Systems

    E-Print Network [OSTI]

    Technical Report 2009-003 A Testing Theory for Real-Time Systems Stefan D. Bruda and Chun Dai|cdai}@cs.ubishops.ca 30 October 2009 Abstract We develop a testing theory for real-time systems. We keep the usual notion or failure of infinite runs, using a formalism similar to the acceptance in B¨uchi automata. We present two

    1. NSTX-U Advances in Real-time C++11 on Linux

      SciTech Connect (OSTI)

      Erickson, Keith G

      2014-04-01

      Programming languages like C and Ada combined with proprietary embedded operating systems have dominated the real-time application space for decades. The new C++11standard includes native, language-level support for concurrency, a required feature for any nontrivial event-oriented real-time software. Threads, Locks, and Atomics now exist to provide the necessary tools to build the structures that make up the foundation of a complex real-time system. The National Spherical Torus Experiment Upgrade (NSTX-U) at the Princeton Plasma Physics Laboratory (PPPL) is breaking new ground with the language as applied to the needs of fusion devices. A new Digital Coil Protection System (DCPS) will serve as the main protection mechanism for the magnetic coils, and it is written entirely in C++11 running on Concurrent Computer Corporation's real-time operating system, RedHawk Linux. It runs over 600 algorithms in a 5 kHz control loop that determine whether or not to shut down operations before physical damage occurs. To accomplish this, NSTX-U engineers developed software tools that do not currently exist elsewhere, including real-time atomic synchronization, real-time containers, and a real-time logging framework. Together with a recent (and carefully configured) version of the GCC compiler, these tools enable data acquisition, processing, and output using a conventional operating system to meet a hard real-time deadline (that is, missing one periodic is a failure) of 200 microseconds.

    2. Car-Rec: A Real Time Car Recognition System Daniel Marcus Jang and Matthew Turk

      E-Print Network [OSTI]

      California at Santa Barbara, University of

      Car-Rec: A Real Time Car Recognition System Daniel Marcus Jang and Matthew Turk University. The resulting system is applied to the domain of car recognition and achieves accurate (> 90%) and real-time performance when searching databases containing thou- sands of images. 1. Introduction Car recognition

    3. Energy-Efficient Speed Scheduling for Real-Time Tasks under Thermal Constraints

      E-Print Network [OSTI]

      Wang, Shengquan

      Energy-Efficient Speed Scheduling for Real-Time Tasks under Thermal Constraints Shengquan Wang. We develop energy-efficient speed scheduling schemes for frame-based real-time tasks under thermal, Jian-Jia Chen, Zhenjun Shi, and Lothar Thiele Abstract Thermal constraints have limited

    4. Precomputed Radiance Transfer for Real-Time Rendering in Dynamic, Low-Frequency Lighting Environments

      E-Print Network [OSTI]

      Kazhdan, Michael

      Precomputed Radiance Transfer for Real-Time Rendering in Dynamic, Low-Frequency Lighting a new, real-time method for rendering diffuse and glossy objects in low-frequency lighting environments-frequency incident lighting into transferred radiance which includes global effects like shadows and interreflections

    5. A Real-Time Head Nod and Shake Detector Ashish Kapoor

      E-Print Network [OSTI]

      A Real-Time Head Nod and Shake Detector Ashish Kapoor Affective Computing, MIT Media Lab 20 Ames Media Lab 20 Ames Street, Cambridge, MA 02139 +1-617-253-0369 picard@media.mit.edu ABSTRACT Head nods conversational functions. We describe a vision-based system that detects head nods and head shakes in real time

    6. Dynamic On-Demand Updating of Data in Real-Time Database Systems

      E-Print Network [OSTI]

      . This calls for data-centric ap- proaches when designing embedded systems, where data and its meta data freshness in soft real-time embedded systems and the target application is vehicular systems, vehicular systems 1. INTRODUCTION Real-time and embedded software increases in complexity due to the larger

    7. FPGA-Based Fuzzy Inference System for Real-time Embedded Applications

      E-Print Network [OSTI]

      FPGA-Based Fuzzy Inference System for Real-time Embedded Applications Dr. Kasim M. Al:- The traditional way of implementing algorithms in software limits the performance of real-time systems, since the data is processed serially. The new generation of FPGAs with embedded processors are attracting

    8. LOAD PROFILING IN DISTRIBUTED REAL-TIME SYSTEMS \\One Size Doesn't Fit All"

      E-Print Network [OSTI]

      pro ling, the system attempts to distribute the load amongst its nodes so as to maximize the chances of nding a node that would satisfy the computational needs of incoming real-time tasks. To that end, we on a solid, analytical foundation for real-time resource management. Examples include the Ada RTSIA

    9. A real time neural energy management strategy for a hybrid pneumatic engine

      E-Print Network [OSTI]

      Paris-Sud XI, Université de

      A real time neural energy management strategy for a hybrid pneumatic engine Guillaume Colin G.bloch@esstin.uhp-nancy.fr} Abstract: Various energy management strategies for a hybrid pneumatic engine are reviewed and a real time Recognition. Keywords: energy management strategy, fuel saving, hybrid vehicle, hybrid pneumatic engine

    10. A Real-Time Reliability Model for Ontology-Based Dynamic Web Service Composition

      E-Print Network [OSTI]

      Xu, Haiping

      153 A Real-Time Reliability Model for Ontology-Based Dynamic Web Service Composition Harmeet Chawla--Ontology-based web service composition allows for integration of available web services in real-time to meet desired objectives. In order to evaluate the quality of composite web services at runtime, there is a pressing need

    11. Real time control of gasifiers to increase tolerance to biomass variety and reduce emissions

      E-Print Network [OSTI]

      Real time control of gasifiers to increase tolerance to biomass variety and reduce emissions to increase tolerance to biomass variety and reduce emissions Ian A. Watson Systems, Power and Energy Research.watson@glasgow.ac.uk #12;Real time control of gasifiers to increase tolerance to biomass variety and reduce emissions

    12. Real Time Dynamic Wind Calculation for a Pressure Driven Wind System Criss Martin

      E-Print Network [OSTI]

      Parberry, Ian

      Real Time Dynamic Wind Calculation for a Pressure Driven Wind System Criss Martin Dept. of Computer University of North Texas Abstract We describe real time dynamic wind calculation for a pressure driven wind fraction of the CPU's processing power over and above what is required for static wind. Experiments were

    13. Distortion-transmission trade-off in real-time transmission of Gauss-Markov sources

      E-Print Network [OSTI]

      Mahajan, Aditya

      Distortion-transmission trade-off in real-time transmission of Gauss-Markov sources Jhelum.mahajan@mcgill.ca Abstract--The problem of optimal real-time transmission of a Gauss-Markov source under constraints on the expected number of transmissions is considered. This setup is motivated by applica- tions where

    14. Real-Time Pricing for Demand Response Based on Stochastic Approximation

      E-Print Network [OSTI]

      Wong, Vincent

      1 Real-Time Pricing for Demand Response Based on Stochastic Approximation Pedram Samadi, Student to reduce their energy expenses. Keywords: Demand response, real-time pricing, PAR minimiza- tion, stochastic approximation, simultaneous perturbation. I. INTRODUCTION Demand response (DR) is an important

    15. On the Problem of Allocating Multicore Virtual Resources to Real-Time Task Pipelines

      E-Print Network [OSTI]

      Lipari, Giuseppe

      1 On the Problem of Allocating Multicore Virtual Resources to Real-Time Task Pipelines Giuseppe--Real-time applications that process streams of data can be modelled by a pipeline of tasks, to be executed on a multi-processor system. The pipeline is periodically activated, and each instance must be completed before an end

    16. Predictive Thermal Control for Real-Time Video Decoding Mehmet H. Suzer

      E-Print Network [OSTI]

      Kang, Kyoung-Don

      Predictive Thermal Control for Real-Time Video Decoding Mehmet H. Suzer Harran University msuzer multime- dia data in real-time with the highest possible QoS, while avoiding potential thermal problems for video decoding. Based on the model, we develop a predictive method that avoids deadline misses due

    17. Validation of the new real-time equilibrium code EQUINOX on JET and Tore Supra

      E-Print Network [OSTI]

      Faugeras, Blaise

      Validation of the new real-time equilibrium code EQUINOX on JET and Tore Supra D. Mazon1 , P. Lotte time equilibrium reconstruction code EQUINOX, which solves the Grad Shafranov equation, has been equilibrium. In order to meet the real-time requirements, a new version of the EQUINOX [1] code has been

    18. A real-time implementation of G.726 with tree coding 

      E-Print Network [OSTI]

      Kokes, Mark Gavin

      1997-01-01

      ) platform. A non-real-time version also exists for the Windows 95 operating system. The real-time G.726 implementation is compared to existing speech coders on the basis of output speech quality. These comparisons are made with the notion that all competing...

    19. Analytical, Wavelet and Frequency based Mathematical Models for Real-Time Rendering

      E-Print Network [OSTI]

      Columbia University

      Analytical, Wavelet and Frequency based Mathematical Models for Real-Time Rendering Bo Sun School of Arts and Sciences COLUMBIA UNIVERSITY 2008 #12;c 2008 Bo Sun All Rights Reserved #12;ABSTRACT Analytical, Wavelet and Frequency based Mathematical Models for Real-Time Rendering Bo Sun Real

    20. Real-Time Synchronization on Multiprocessors: To Block or Not to Block, to Suspend or Spin?

      E-Print Network [OSTI]

      Anderson, James

      of several multiprocessor real-time synchronization options; this study is directed at previously- proposed knowledge, the real-time synchronization options considered herein have never been empirically compared before on an actual testbed. Before continuing, let us examine the options available for real

    1. Utility Accrual Real-Time Resource Access Protocols with Assured Individual Activity Timeliness Behavior

      E-Print Network [OSTI]

      Ravindran, Binoy

      Utility Accrual Real-Time Resource Access Protocols with Assured Individual Activity Timeliness Behavior Abstract We present a class of utility accrual resource access protocols for real-time embedded systems. The proto- cols consider application activities that are subject to time/utility function time

    2. A Utility Accrual Scheduling Algorithm for Real-Time Activities With Mutual Exclusion Resource Constraints

      E-Print Network [OSTI]

      Ravindran, Binoy

      A Utility Accrual Scheduling Algorithm for Real-Time Activities With Mutual Exclusion Resource-processor real-time scheduling algorithm called the Generic Utility Scheduling algorithm (which we will refer activities that have time con- straints specified using arbitrarily shaped time/utility functions, and have

    3. Microfluidic single cell real-time PCR for comparative analysis of gene expression patterns

      E-Print Network [OSTI]

      Quake, Stephen R.

      Microfluidic single cell real-time PCR for comparative analysis of gene expression patterns collection. We present here a high-content microfluidic real-time platform as a powerful tool expression; dynamic assay; microfluidic; pluripotent INTRODUCTION Novel genomic technologies have paved

    4. A Study of Concurrency Control in Real-Time, Active Database Systems

      E-Print Network [OSTI]

      Son, Sang H.

      A Study of Concurrency Control in Real-Time, Active Database Systems Anindya Datta, Member, IEEE control, automated financial trading, process control and military command, and control systems. In spiteÐReal-time database systems, active database systems, concurrency control, performance evaluation. æ 1 INTRODUCTION

    5. Section 1526 Real-time, Non-linear, Dynamic Simulation in Teaching Structures

      E-Print Network [OSTI]

      Martini, Kirk

      Section 1526 Real-time, Non-linear, Dynamic Simulation in Teaching Structures: Elementary simulation in topics ranging from introductory statics to advanced steel design and earthquake engineering, and plastic collapse mechanisms. The program performs computations in real time, so that models respond

    6. Real-Time Demand Response with Uncertain Renewable Energy in Smart Grid

      E-Print Network [OSTI]

      Wierman, Adam

      Real-Time Demand Response with Uncertain Renewable Energy in Smart Grid Libin Jiang and Steven Low manages user load through real-time demand response and purchases balancing power on the spot market and demand response in the presence of uncertain renewable supply and time-correlated demand. The overall

    7. Real-time observation of lithium fibers growth inside a nanoscale lithium-ion battery

      E-Print Network [OSTI]

      Endres. William J.

      Real-time observation of lithium fibers growth inside a nanoscale lithium-ion battery Hessam to observe the real-time nucleation and growth of the lithium fibers inside a nanoscale Li-ion battery. Our.1063/1.3643035] Lithium-ion batteries are of great interest due to their high energy density, however, various safety

    8. Enhancing Security of Real-Time Applications on Grids through Dynamic Scheduling

      E-Print Network [OSTI]

      Feitelson, Dror

      Enhancing Security of Real-Time Applications on Grids through Dynamic Scheduling Tao Xie Xiao Qin on Grids require security protections to completely fulfill their security-critical needs. Unfortunately to seamlessly integrate security into real-time scheduling for applications running on Grids. In this paper we

    9. Pricing mechanism for real-time balancing in regional electricity markets

      E-Print Network [OSTI]

      de Weerdt, Mathijs

      for precisely controlling the real-time balance in electricity markets, where retail brokers aggregate of their retail customer loads and sources. We enumerate the desirable properties of a market-based balancingPricing mechanism for real-time balancing in regional electricity markets Mathijs de Weerdt

    10. Requirements Analysis of Real-Time Control Systems using PVS Bruno Dutertre Victoria Stavridou

      E-Print Network [OSTI]

      Dutertre, Bruno

      Requirements Analysis of Real-Time Control Systems using PVS Bruno Dutertre Victoria Stavridou and theorem proving in requirement analysis of real- time control systems. A major part of this work involved an experiment applying the PVS theorem prover to the analysis of an avionics control system. The case study

    11. Generalized Performance Management of Multi-Class Real-Time Imprecise Data Services

      E-Print Network [OSTI]

      Son, Sang H.

      for performance guarantees. In this paper we propose an approach for managing the quality of service of realGeneralized Performance Management of Multi-Class Real-Time Imprecise Data Services Mehdi Amirijoo@isy.liu.se Abstract The intricacy of real-time data service management in- creases mainly due to the emergence

    12. P-132 / A. Murauski P-132: Real-Time Simulation Software

      E-Print Network [OSTI]

      P-132 / A. Murauski P-132: Real-Time Simulation Software for Electro-Optical Calculation of LC is proposed. We developed a real-time simulation software based on fast algorithms for solving differential immediately after changing any parameters of liquid crystal or cell configuration. The software is useful

    13. An Infrastructure for Hardware-Software Co-design of Embedded Real-Time Java Applications

      E-Print Network [OSTI]

      Wagner, Flávio Rech

      An Infrastructure for Hardware-Software Co-design of Embedded Real-Time Java Applications Elias of Kansas, USA dandrews@ittc.ku.edu Abstract The partitioning of applications into hardware and software in hardware in the context of the Real Time Specification for Java (RTSJ) standard. There is a Java class

    14. Case Study on Real-Time Visualization of Virtual Tubingen on Commodity PC Hardware

      E-Print Network [OSTI]

      Case Study on Real-Time Visualization of Virtual T¨ubingen on Commodity PC Hardware M. Meißner£ J amount of textures -- is one of the key problems. Until very recently, graphics hardware for commodity accomplish real-time frame up- dates on commodity PC Hardware. 1.1 Related Work Culling invisible objects

    15. Implementing the Palomar Transient Factory Real-Time Detection Pipeline in GLADE: Results and Observations

      E-Print Network [OSTI]

      Rusu, Florin

      Implementing the Palomar Transient Factory Real-Time Detection Pipeline in GLADE: Results, USA Abstract. Palomar Transient Factory is a comprehensive detection system for the identification-query processing, real-time classification 1 Introduction The Palomar Transient Factory (PTF) project [1, 2] aims

    16. REAL-TIME PEDESTRIAN DETECTION USING EIGENFLOW Dhiraj Goel, Tsuhan Chen

      E-Print Network [OSTI]

      Chen, Tsuhan

      REAL-TIME PEDESTRIAN DETECTION USING EIGENFLOW Dhiraj Goel, Tsuhan Chen Carnegie Mellon University recent attempts to use motion for pedestrian detection, this system performs this task in real- time pedestrians. Index Terms-- Optical Flow, PCA, AdaBoost 1. INTRODUCTION AND RELATED WORK Pedestrian detection

    17. Real time search on the web: Queries, topics, and economic value Bernard J. Jansen a,

      E-Print Network [OSTI]

      Jansen, James

      examine aggregate usage of the search engine, including number of users, queries, and terms. We term interest in a topic and the polling nature of real time queries. Concerning search topics geographical affinity, pointing to a location-based aspect to real time search. In terms of economic value, we

    18. A Simulation Tool for Real-time Systems using Environmental Energy Harvesting Maryline CHETTO

      E-Print Network [OSTI]

      Paris-Sud XI, Université de

      A Simulation Tool for Real-time Systems using Environmental Energy Harvesting Maryline CHETTO, we present a simulation tool for real-time systems using environmental energy harvesting. Energy. The simulator enables to construct an optimal schedule for any task set, battery capacity and energy source

    19. MODELING AND VERIFICATION OF REAL-TIME AND CYBER-PHYSICAL SYSTEMS

      E-Print Network [OSTI]

      Gupta, Gopal

      MODELING AND VERIFICATION OF REAL-TIME AND CYBER-PHYSICAL SYSTEMS by Neda Saeedloei APPROVED Copyright 2011 Neda Saeedloei All Rights Reserved #12;To my mother. #12;MODELING AND VERIFICATION OF REAL-TIME AND CYBER-PHYSICAL SYSTEMS by NEDA SAEEDLOEI, B.S., M.S. DISSERTATION Presented to the Faculty

    20. Real-time Trajectory Design for Unmanned Aerial Vehicles using Receding Horizon Control

      E-Print Network [OSTI]

      Real-time Trajectory Design for Unmanned Aerial Vehicles using Receding Horizon Control by Yoshiaki Students #12;2 #12;Real-time Trajectory Design for Unmanned Aerial Vehicles using Receding Horizon Control This thesis investigates the coordination and control of fleets of unmanned aerial vehicles (UAVs). Future

    1. NSTX-U Advances in Real-Time C++11 on Linux

      DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

      Erickson, Keith G.

      2015-08-14

      Programming languages like C and Ada combined with proprietary embedded operating systems have dominated the real-time application space for decades. The new C++11standard includes native, language-level support for concurrency, a required feature for any nontrivial event-oriented real-time software. Threads, Locks, and Atomics now exist to provide the necessary tools to build the structures that make up the foundation of a complex real-time system. The National Spherical Torus Experiment Upgrade (NSTX-U) at the Princeton Plasma Physics Laboratory (PPPL) is breaking new ground with the language as applied to the needs of fusion devices. A new Digital Coil Protection System (DCPS) willmore »serve as the main protection mechanism for the magnetic coils, and it is written entirely in C++11 running on Concurrent Computer Corporation's real-time operating system, RedHawk Linux. It runs over 600 algorithms in a 5 kHz control loop that determine whether or not to shut down operations before physical damage occurs. To accomplish this, NSTX-U engineers developed software tools that do not currently exist elsewhere, including real-time atomic synchronization, real-time containers, and a real-time logging framework. Together with a recent (and carefully configured) version of the GCC compiler, these tools enable data acquisition, processing, and output using a conventional operating system to meet a hard real-time deadline (that is, missing one periodic is a failure) of 200 microseconds.« less

    2. The Case For Prediction-based Best-effort Real-time Systems

      E-Print Network [OSTI]

      The Case For Prediction-based Best-effort Real-time Systems Peter A. Dinda Bruce Lowekamp Loukas and Distributed Real- Time Systems (WPDRTS '99) Abstract We propose a prediction-based best-effort real significant examples, an earthquake visualization tool and a GIS map display tool, and show how they could

    3. Indiana University School of Library and Information Science S604/S764 : Information Networks

      E-Print Network [OSTI]

      Indiana University

      Indiana University School of Library and Information Science S604/S764. But what is a network? What types of networks exist? Why are they interesting of Library and Information Science, Indiana University, on November 11, 1996

    4. GPU programming for real-time watercolor simulation 

      E-Print Network [OSTI]

      Scott, Jessica Stacy

      2005-02-17

      , Moravanszky [11] presents detailed information about matrix representation and linear algebra operations, though in a more detailed and practical tutorial format. 17 CHAPTER III METHODS Structure of the watercolor program The watercolor simulation tool...

    5. Real-Time Quantitative Imaging of Failure Events in Materials...

      Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

      25 March 2013 00:00 Gathering information on the evolution of small cracks in ceramic matrix composites used in hostile environments such as in gas turbines and hypersonic flights...

    6. Optimal Real-time Dispatch for Integrated Energy Systems

      E-Print Network [OSTI]

      Firestone, Ryan Michael

      2007-01-01

      Energy Consumption . 87 Solar Insolation Data .Data Center], 2007. “Solar Radiation Resource Information”, National Renewable Energyand solar insolation data were collected from the Weather xli Underground and the National Renewable Energy

    7. From Control Models to Real-Time Code Using Giotto

      E-Print Network [OSTI]

      Henzinger, Thomas A.

      helicopter originally developed at the Swiss Federal Institute of Technology (ETH) Zürich [3]. We demonstrate of the resulting code. We then report on the Giotto helicopter project. We use the autopilot software for the helicopter to guide an informal presentation of the Giotto language, and of the S/G translator, which

    8. From Control Models to RealTime Code Using Giotto

      E-Print Network [OSTI]

      Henzinger, Thomas A.

      helicopter originally developed at the Swiss Federal Institute of Technology (ETH) Zürich [3]. We demonstrate of the resulting code. We then report on the Giotto helicopter project. We use the autopilot software for the helicopter to guide an informal presentation of the Giotto language, and of the S/G translator, which

    9. Integrating Security and Real-Time Requirements Using Covert

      E-Print Network [OSTI]

      Son, Sang H.

      is stated in terms of subjects and objects. An object is understood to be a data file, record, or a field to be made between security and timeliness. We first define mutual information, a measure of the degree showing the efficacy of the scheme obtained through simulation experiments are also discussed. Index Terms

    10. Detiding DART buoy data for real-time extraction of source coefficients for operational tsunami forecasting

      E-Print Network [OSTI]

      Percival, Donald B; Eble, Marie C; Gica, Edison; Huang, Paul Y; Mofjeld, Harold O; Spillane, Michael C; Titov, Vasily V; Tolkova, Elena I

      2014-01-01

      U.S. Tsunami Warning Centers use real-time bottom pressure (BP) data transmitted from a network of buoys deployed in the Pacific and Atlantic Oceans to tune source coefficients of tsunami forecast models. For accurate coefficients and therefore forecasts, tides at the buoys must be accounted for. In this study, five methods for coefficient estimation are compared, each of which accounts for tides differently. The first three subtract off a tidal prediction based on (1) a localized harmonic analysis involving 29 days of data immediately preceding the tsunami event, (2) 68 pre-existing harmonic constituents specific to each buoy, and (3) an empirical orthogonal function fit to the previous 25 hrs of data. Method (4) is a Kalman smoother that uses method (1) as its input. These four methods estimate source coefficients after detiding. Method (5) estimates the coefficients simultaneously with a two-component harmonic model that accounts for the tides. The five methods are evaluated using archived data from eleven...

    11. Centre for Defence Communications and Information Networking

      E-Print Network [OSTI]

      Balasuriya, Sanjeeva

      as OUR SUCCESS STORIES · Analysing measurements of operational networks, identifying operational savings DEFENCE NETWORK CAPABILITY ROBUSTNESS | RELIABILITY | EFFICIENCY | SECURITY The Centre for Defence based concentration of defence network analysis capability. CDCIN focusses on the modelling, measurement

    12. An Efficient Local Strategy to Control Information Spreading in Network

      E-Print Network [OSTI]

      Mehta, Anoop

      2015-01-01

      In social networks, control of rumor spread is an active area of research. SIR model is generally used to study the rumor dynamics in network while considering the rumor as an epidemic. In disease spreading model, epidemic is controlled by removing central nodes in the network. Full network information is needed for such removal. To have the information of complete network is difficult proposition. As a consequence, the search of an algorithm that may control epidemic without needing global information is a matter of great interest. In this paper, an immunization strategy is proposed that uses only local information available at a node, viz. degree of the node and average degree of its neighbour nodes. Proposed algorithm has been evaluated for scale-free network using SIR model. Numerical results show that proposed method has less complexity and gives significantly better results in comparison with other strategies while using only local information.

    13. Provenance Based Information Trustworthiness Evaluation in Multi-hop Networks

      E-Print Network [OSTI]

      California at Davis, University of

      Provenance Based Information Trustworthiness Evaluation in Multi-hop Networks Xinlei (Oscar) Wang model to evaluate the trustworthiness of information as well as the information publishing nodes based on the information provenance. We con- sider two factors in evaluating the provenance based information trust: Path

    14. Real-time wideband cylindrical holographic surveillance system

      DOE Patents [OSTI]

      Sheen, David M. (Richland, WA); McMakin, Douglas L. (Richland, WA); Hall, Thomas E. (Kennewick, WA); Severtsen, Ronald H. (Richland, WA)

      1999-01-01

      A wideband holographic cylindrical surveillance system including a transceiver for generating a plurality of electromagnetic waves; antenna for transmitting the electromagnetic waves toward a target at a plurality of predetermined positions in space; the transceiver also receiving and converting electromagnetic waves reflected from the target to electrical signals at a plurality of predetermined positions in space; a computer for processing the electrical signals to obtain signals corresponding to a holographic reconstruction of the target; and a display for displaying the processed information to determine nature of the target. The computer has instructions to apply Fast Fourier Transforms and obtain a three dimensional cylindrical image.

    15. Real-time wideband cylindrical holographic surveillance system

      DOE Patents [OSTI]

      Sheen, D.M.; McMakin, D.L.; Hall, T.E.; Severtsen, R.H.

      1999-01-12

      A wideband holographic cylindrical surveillance system is disclosed including a transceiver for generating a plurality of electromagnetic waves; antenna for transmitting the electromagnetic waves toward a target at a plurality of predetermined positions in space; the transceiver also receiving and converting electromagnetic waves reflected from the target to electrical signals at a plurality of predetermined positions in space; a computer for processing the electrical signals to obtain signals corresponding to a holographic reconstruction of the target; and a display for displaying the processed information to determine nature of the target. The computer has instructions to apply Fast Fourier Transforms and obtain a three dimensional cylindrical image. 13 figs.

    16. Concept of Operations for Real-time Airborne Management System

      SciTech Connect (OSTI)

      Barr, Jonathan L.; Taira, Randal Y.; Orr, Heather M.

      2013-03-04

      The purpose of this document is to describe the operating concepts, capabilities, and benefits of RAMS including descriptions of how the system implementations can improve emergency response, damage assessment, task prioritization, and situation awareness. This CONOPS provides general information on operational processes and procedures required to utilize RAMS, and expected performance benefits of the system. The primary audiences for this document are the end users of RAMS (including flight operators and incident commanders) and the RAMS management team. Other audiences include interested offices within the Department of Homeland Security (DHS), and officials from other state and local jurisdictions who want to implement similar systems.

    17. Looking at Transistor Gate Oxide Formation in Real Time

      Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

      AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesse BergkampCenter (LMI-EFRC)Lodging LodgingLogisticsLong-Term

    18. Looking at Transistor Gate Oxide Formation in Real Time

      Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

      AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesse BergkampCenter (LMI-EFRC)Lodging LodgingLogisticsLong-TermLooking at

    19. Looking at Transistor Gate Oxide Formation in Real Time

      Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

      AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesse BergkampCenter (LMI-EFRC)Lodging LodgingLogisticsLong-TermLooking

    20. Information Delivery in Large Wireless Networks with Minimum Energy Expense

      E-Print Network [OSTI]

      Wang, Wenye

      Information Delivery in Large Wireless Networks with Minimum Energy Expense Yi Xu and Wenye Wang in large-scale multihop wireless networks because of the limited energy supplies from batteries. We and strategies that reduce energy consumption in wireless net- works to extend network lifetimes. Examples

    1. Repeated quantum error correction on a continuously encoded qubit by real-time feedback

      E-Print Network [OSTI]

      Julia Cramer; Norbert Kalb; M. Adriaan Rol; Bas Hensen; Machiel S. Blok; Matthew Markham; Daniel J. Twitchen; Ronald Hanson; Tim H. Taminiau

      2015-08-06

      Reliable quantum information processing in the face of errors is a major fundamental and technological challenge. Quantum error correction protects quantum states by encoding a logical quantum bit (qubit) in multiple physical qubits, so that errors can be detected without affecting the encoded state. To be compatible with universal fault-tolerant computations, it is essential that the states remain encoded at all times and that errors are actively corrected. Here we demonstrate such active error correction on a continuously protected qubit using a diamond quantum processor. We encode a logical qubit in three long-lived nuclear spins, repeatedly detect phase errors by non-destructive measurements using an ancilla electron spin, and apply corrections on the encoded state by real-time feedback. The actively error-corrected qubit is robust against errors and multiple rounds of error correction prevent errors from accumulating. Moreover, by correcting phase errors naturally induced by the environment, we demonstrate that encoded quantum superposition states are preserved beyond the dephasing time of the best physical qubit used in the encoding. These results establish a powerful platform for the fundamental investigation of error correction under different types of noise and mark an important step towards fault-tolerant quantum information processing.

    2. Real-time condition assessment of RAPTOR telescope systems

      SciTech Connect (OSTI)

      Stull, Chris; Taylor, Stuart; Wren, James; Farrar, Charles; Park, Gyuhae

      2010-11-30

      The RAPid Telescopes for Optical Response (RAPTOR) observatory network consists of several robotic astronomical telescopes primarily designed to search for astrophysical transients called a gamma-ray bursts (GRBs). Although intrinsically bright, GRBs are difficult to detect because of their short duration. Typically, they are first observed by satellites that then relay the coordinates of the GRB to a ground station which, in turn, distributes the coordinates over the internet so that ground based observers can perform follow-up observations. Typically the ground based observations begin after the GRB has ended and only residual emiSSion (the 'afterglow') is left. However, if the satellite relays the GRB coordinates quickly enough, a 'fast' robotic telescope on the ground may be able to catch the GRB in progress. The RAPTOR telescope system is one of only a few in the world to have accomplished this feat. In order to achieve these results, the RAPTOR telescopes must operate autonomously at a high duty-cycle and in peak operating condition. Currently the telescopes are maintained in an ad hoc manner, often in a run-to-failure mode. The RAPTOR project could benefit greatly from a structural health monitoring (SHM) system, especially as more complex units are added to the suite of telescopes. This paper will summarize preliminary results from an SHM study performed on one of the RAPTOR telescopes. Damage scenarios that are of concern and that have been previously observed are first summarized. Then a specific study of damage to the telescope drive mechanism is presented where the data acquisition system is first described. Next, damage detection algorithms are developed with LANL's new publically available software SHMTools and the results of this process are discussed in detail. The paper will conclude with a summary of future planned refinemenls of the RAPTOR SHM system.

    3. 52 PERVASIVE computing Published by the IEEE Computer Society 1536-1268/07/$25.00 2007 IEEE WIKICITY: REAL-TIME

      E-Print Network [OSTI]

      Liang, Huizhi "Elly"

      applications, dramatically increasing sys- tems' efficiency by saving energy, reg- ulating the dynamics and thus becoming prime actors in improving urban systems' efficiency. For more information, contact Fran WIKICITY: REAL-TIME URBAN ENVIRONMENTS Francesco Calabrese, Kristian Kloeckl, and Carlo Ratti

    4. Real-time implementation of a vision based automatic push button 

      E-Print Network [OSTI]

      Rajkotwala, Farida

      1996-01-01

      This thesis presents a real-time digital signal Processing (DSP) system to detect the presence of pedestrians waiting to cross an intersection. Such a system would improve both pedestrian and vehicle flow considering that ...

    5. Near Real-time Data Evaluation Strategies for XRF Imaging Data...

      Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

      Near Real-time Data Evaluation Strategies for XRF Imaging Data August 24, 2015 11:00AM to 12:00PM Presenter Matthias Alfeld, Universite Pierre et Marie Curie Location Building 431...

    6. Development of environmental and oceanographic real-time assessment system for the near-shore environment 

      E-Print Network [OSTI]

      Ojo, Temitope O.

      2006-08-16

      of the constituents of interest. This study is focused on the development of a framework that couples real-time measurements and numerical simulation for tracking constituents in surface waters. The parameterization of the mixing and turbulent diffusion impacts...

    7. Parallel and real-time implementation of an acoustic echo canceller using oversampled wavelet frame algorithms 

      E-Print Network [OSTI]

      Tam, Pak-Yin

      1995-01-01

      This thesis describes a novel echo cancellation system that eliminates nonstationary echoes with long acoustic delays in real-time. By combining subband adaptive filtering and active system identification based on fast wavelet transform...

    8. QoS Measurement of Internet Real-Time Multimedia Services Wenyu Jiang, Henning Schulzrinne

      E-Print Network [OSTI]

      QoS Measurement of Internet Real-Time Multimedia Services Wenyu Jiang, Henning Schulzrinne fwenyu,schulzrinneg@cs.columbia.edu Technical Report CUCS-015-99 Department of Computer Science Columbia University December 1999 Abstract Real

    9. Toward natural interaction in the real world: real-time gesture recognition

      E-Print Network [OSTI]

      Yin, Ying

      Using a new hand tracking technology capable of tracking 3D hand postures in real-time, we developed a recognition system for continuous natural gestures. By natural gestures, we mean those encountered in spontaneous ...

    10. Real-time processing of a long perimeter fiber optic intrusion system 

      E-Print Network [OSTI]

      Snider, William Timothy

      2009-09-30

      This thesis reports on recent advances made in real-time intruder detection for an intrusion system developed at Texas A&M University that utilizes a phase-sensitive optical time-domain reflectometer. The system uses light ...

    11. Real-time programming and the big ideas of computational literacy

      E-Print Network [OSTI]

      Hancock, Christopher Michael, 1961-

      2003-01-01

      Though notoriously difficult, real-time programming offers children a rich new set of applications, and the opportunity to engage bodily knowledge and experience more centrally in intellectual enterprises. Moreover, the ...

    12. DSS-mediated Inhibition of Quantitative Real-time Polymerase Chain Reaction 

      E-Print Network [OSTI]

      Kaur, Jaspreet

      2011-08-04

      The incidence of inflammatory bowel diseases (IBD), including ulcerative colitis (UC), is on the rise. UC is modeled in rodents by the consumption of dextran sodium sulfate (DSS). Quantitative real-time polymerase chain reaction (qPCR) is a...

    13. A system for real-time gesture recognition and classification of coordinated motion

      E-Print Network [OSTI]

      Lovell, Steven Daniel

      2005-01-01

      This thesis describes the design and implementation of a wireless 6 degree-of-freedom inertial sensor system to be used for multiple-user, real-time gesture recognition and coordinated activity detection. Analysis is ...

    14. Multiversion Locking Protocol with Freezing for Secure Real-Time Database Systems

      E-Print Network [OSTI]

      Stankovic, John A.

      Multiversion Locking Protocol with Freezing for Secure Real-Time Database Systems Chanjung Park constraints and security requirements, a new method, called the freezing method, is proposed. In order to show

    15. Towards Real-Time and Memory Efficient Predictions of Valve States in Diesel Engines

      E-Print Network [OSTI]

      Zell, Andreas

      Towards Real-Time and Memory Efficient Predictions of Valve States in Diesel Engines Philippe Komma T¨ubingen, Germany {philippe.komma, andreas.zell}@uni-tuebingen.de system for a diesel engine

    16. A (Smart) Real-time PMU-assisted Power Transfer Limitation Monitoring

      E-Print Network [OSTI]

      A (Smart) Real-time PMU-assisted Power Transfer Limitation Monitoring and Enhancement System Unit (PMU) Integrated System #12;Monitoring & Analysis (Base-Case) Main Window KMF BED-BLA 50045005

    17. Continuous reservoir simulation incorporating uncertainty quantification and real-time data 

      E-Print Network [OSTI]

      Holmes, Jay Cuthbert

      2009-05-15

      of uncertainty in resulting forecasts. A new technology to allow this process to run continuously with little human interaction is real-time production and pressure data, which can be automatically integrated into runs. Two tests of this continuous simulation...

    18. Real-time trajectory optimization and air traffic control simulation for noise abatement approach procedures

      E-Print Network [OSTI]

      Zou, Feng, 1977-

      2004-01-01

      Aircraft noise is a major obstacle to the growth of aviation. This thesis presents an adaptive onboard real-time optimization algorithm and an Air Traffic Control simulation model that can minimize the aircraft approach ...

    19. A power line impedance spectrum analyzer using real-time digital signal processing 

      E-Print Network [OSTI]

      Margolis, Michael G

      1993-01-01

      Power distribution system impedance as seen by power converters and other non-linear loads is important for the determination of harmonic current injection and propagation caused by these loads. This thesis presents a real-time power line impedance...

    20. Real-time impluse-based rigid body simulation and rendering 

      E-Print Network [OSTI]

      Yuksel, Can

      2007-09-17

      The purpose of this thesis is to develop and demonstrate a physically based rigid body simulation with a focus on simplifications to achieve real-time performance. This thesis aims to demonstrate that by improving the efficiency with simplified...

    1. Toward Real-time Modeling of Human Heart Ventricles at Cellular...

      Office of Scientific and Technical Information (OSTI)

      Conference: Toward Real-time Modeling of Human Heart Ventricles at Cellular Resolution: Multi-hour Simulation of Drug-induced Arrhythmias Citation Details In-Document Search Title:...

    2. A non-blocking buffer mechanism for real-time event message communication

      E-Print Network [OSTI]

      Kim, KHK

      2006-01-01

      A Non-Blocking Buffer Mechanism for Real-Time Event Messagecomputing systems. An interaction mechanism, called the non-blocking writer (NBW) mechanism and invented by Kopetz, is

    3. GENERAL TECHNICAL REPORT PSW-GTR-196 Comparative Evaluation of Real-Time PCR

      E-Print Network [OSTI]

      GENERAL TECHNICAL REPORT PSW-GTR-196 554 Comparative Evaluation of Real-Time PCR (Taq Health and Seeds Inspectorate between October 2003 and February 2004. These were surface- decontaminated

    4. Real Time (20 Second) Data Base Single Loop (Packed into 3 bytes)

      E-Print Network [OSTI]

      ) Data Base Single Loop (Packed into 3 bytes) ------------------------------------------- Data Element;------------------------------------------------------------------------- --- Real Time (20 Second) Data Base Station (Packed into 3 bytes Loops | 3 | [0]|Data Present, 0=No Data | |Scan Cnt| 11 | [0]|

    5. Modeling real-time human-automation collaborative scheduling of unmanned vehicles

      E-Print Network [OSTI]

      Clare, Andrew S

      2013-01-01

      Recent advances in autonomy have enabled a future vision of single operator control of multiple heterogeneous Unmanned Vehicles (UVs). Real-time scheduling for multiple UVs in uncertain environments will require the ...

    6. Real-time geometric motion blur for a deforming polygonal mesh 

      E-Print Network [OSTI]

      Jones, Nathaniel Earl

      2004-09-30

      Motion blur is one important method for increasing the visual quality of real-time applications. This is increasingly true in the area of interactive applications, where designers often seek to add graphical flair or realism to their programs...

    7. A non-intrusive fault tolerant framework for mission critical real-time systems

      E-Print Network [OSTI]

      Gorelov, Sébastien

      2005-01-01

      The need for dependable real-time systems for embedded application is growing, and, at the same time, so does the amount of functionality required from these systems. As testing can only show the presence of errors, not ...

    8. Towards More Transmission Asset Utilization through Real-time Path Rating

      SciTech Connect (OSTI)

      Diao, Ruisheng; Huang, Zhenyu; Jin, Chunlian; Vyakaranam, Bharat GNVSR; Jin, Shuangshuang; Makarov, Yuri V.

      2013-10-21

      Ratings of transmission paths, typically determined in an offline environment, are static and tend to be conservative, leading to underutilization of transmission assets, higher costs of system operation and renewable energy integration, and lower efficiency and savings. With the ever-increasing transmission congestion costs and new challenges from renewable integration, increasing transfer capacity of existing transmission lines is essential. Real-time path rating provides a promising approach to enabling additional power transfer capability and fully utilizing transfer capability. In this paper, the feasibility of real-time path rating is investigated. Several promising technologies to achieve real-time path rating are discussed. Various benefits that can be expected from real-time path rating, such as increased transfer capability and reduced total generation cost, are demonstrated through simulations conducted on the Western Electricity Coordinating Council system model.

    9. Supporting Nested Locking in Multiprocessor Real-Time Systems Bryan C. Ward and James H. Anderson

      E-Print Network [OSTI]

      Anderson, James

      Supporting Nested Locking in Multiprocessor Real-Time Systems Bryan C. Ward and James H. Anderson Department of Computer Science, University of North Carolina at Chapel Hill Abstract This paper presents

    10. ProtEx: a toolkit for the analysis of distributed real-time systems 

      E-Print Network [OSTI]

      Meylan, Yves Damien Meylan

      2000-01-01

      Large-scale distributed real-time systems are increasingly difficult to analyze within the Rate Monotonic Analysis (RMA) framework. This is due partly to their heterogeneity, complex interaction between components, and the ...

    11. Development of a Time Resolved Fluorescence Spectroscopy System for Near Real-Time Clinical Diagnostic Applications 

      E-Print Network [OSTI]

      Trivedi, Chintan A.

      2010-07-14

      The design and development of a versatile time resolved fluorescence spectroscopy (TRFS) system capable of near real time data acquisition and processing for potential clinical diagnostic applications is reported. The TRFS apparatus is portable...

    12. Real-time large-scale dense RGB-D SLAM with volumetric fusion

      E-Print Network [OSTI]

      Whelan, Thomas

      We present a new simultaneous localization and mapping (SLAM) system capable of producing high-quality globally consistent surface reconstructions over hundreds of meters in real time with only a low-cost commodity RGB-D ...

    13. In-situ, Real-Time Monitoring of Mechanical and Chemical Structure...

      Office of Scientific and Technical Information (OSTI)

      Conference: In-situ, Real-Time Monitoring of Mechanical and Chemical Structure Changes in a V2O5 Battery Electrode Using a MEMS Optical Sensor Citation Details In-Document Search...

    14. Real time Markov chains: Wind states in anemometric data

      E-Print Network [OSTI]

      Sanchez, P A; Jaramillo, O A

      2015-01-01

      The description of wind phenomena is frequently based on data obtained from anemometers, which usually report the wind speed and direction only in a horizontal plane. Such measurements are commonly used either to develop wind generation farms or to forecast weather conditions in a geographical region. Beyond these standard applications, the information contained in the data may be richer than expected and may lead to a better understanding of the wind dynamics in a geographical area. In this work we propose a statistical analysis based on the wind velocity vectors, which we propose may be grouped in "wind states" associated to binormal distribution functions. We found that the velocity plane defined by the anemometric velocity data may be used as a phase space, where a finite number of states may be found and sorted using standard clustering methods. The main result is a discretization technique useful to model the wind with Markov chains. We applied such ideas in anemometric data for two different sites in M...

    15. Rethinking Information Theory for Mobile Ad Hoc Networks

      E-Print Network [OSTI]

      Andrews, Jeff; Haenggi, Martin; Berry, Randy; Jafar, Syed; Guo, Dongning; Shakkottai, Sanjay; Heath, Robert; Neely, Michael; Weber, Steven; Yener, Aylin

      2007-01-01

      The subject of this paper is the long-standing open problem of developing a general capacity theory for wireless networks, particularly a theory capable of describing the fundamental performance limits of mobile ad hoc networks (MANETs). A MANET is a peer-to-peer network with no pre-existing infrastructure. MANETs are the most general wireless networks, with single-hop, relay, interference, mesh, and star networks comprising special cases. The lack of a MANET capacity theory has stunted the development and commercialization of many types of wireless networks, including emergency, military, sensor, and community mesh networks. Information theory, which has been vital for links and centralized networks, has not been successfully applied to decentralized wireless networks. Even if this was accomplished, for such a theory to truly characterize the limits of deployed MANETs it must overcome three key roadblocks. First, most current capacity results rely on the allowance of unbounded delay and reliability. Second, ...

    16. CS 547: Wireless Networking Ubiquitous access to information, anywhere, anyplace, and anytime, will characterize whole new

      E-Print Network [OSTI]

      Heller, Barbara

      CS 547: Wireless Networking Objectives Ubiquitous access to information, anywhere, anyplace mechanisms. This course introduces broadcast radio networks, cellular networks, ad hoc wireless networks Hoc (Multihop Packet radio) Wireless Networks Asymptotic Critical Transmission Range for Connectivity

    17. The connection between information theory and networked control

      E-Print Network [OSTI]

      California at Berkeley, University of

      The connection between information theory and networked control Anant Sahai based in part on joint 1 A bridge to nowhere? From control to information theory. A simple control problem A connection to information theory Fixing information theory and filling in the gaps. 2 Coming back to the control problem

    18. DESAlert: Enabling Real-Time Transient Follow-Up with Dark Energy Survey Data

      E-Print Network [OSTI]

      Poci, A; :,; Abbott, T; Abdalla, F B; Allam, S; Bauer, A H; Benoit-Lévy, A; Bertin, E; Brooks, D; Brown, P J; Buckley-Geer, E; Burke, D L; Rosell, A Carnero; Kind, M Carrasco; Covarrubias, R; da Costa, L N; D'Andrea, C B; DePoy, D L; Desai, S; Dietrich, J P; Cunha, C E; Eifler, T F; Estrada, J; Evrard, A E; Neto, A Fausti; Finley, D A; Flaugher, B; Fosalba, P; Frieman, J; Gerdes, D; Gruen, D; Gruendl, R A; Honscheid, K; James, D; Kuropatkin, N; Lahav, O; Li, T S; March, M; Marshall, J; Merritt, K W; Miller, C J; Nichol, R C; Nord, B; Ogando, R; Plazas, A A; Romer, A K; Roodman, A; Rykoff, E S; Sako, M; Sanchez, E; Scarpine, V; Schubnell, M; Sevilla, I; Smith, C; Soares-Santos, M; Sobreira, F; Suchyta, E; Swanson, M E C; Tarle, G; Thaler, J; Thomas, R C; Tucker, D; Walker, A R; Wester, W

      2015-01-01

      The Dark Energy Survey (DES) is currently undertaking an observational program imaging $1/4$ of the southern hemisphere sky with unprecedented photometric accuracy. In the process of observing millions of faint stars and galaxies to constrain the parameters of the dark energy equation of state, the DES will obtain pre-discovery images of the regions surrounding an estimated 100 gamma-ray bursts (GRBs) over five years. Once GRBs are detected by, e.g., the Swift satellite, the DES data will be extremely useful for follow-up observations by the transient astronomy community. We describe a recently-commissioned suite of software that listens continuously for automated notices of GRB activity, collates useful information from archival DES data, and promulgates relevant data products back to the community in near-real-time. Of particular importance are the opportunities that DES data provide for relative photometry of GRBs or their afterglows, as well as for identifying key characteristics (e.g., photometric redshi...

    19. gFEX, the ATLAS Calorimeter Level-1 Real Time Processor

      E-Print Network [OSTI]

      Tang, Shaochun; The ATLAS collaboration; Chen, Hucheng; Lanni, Francesco; Takai, Helio; Wu, Weihao

      2015-01-01

      The global feature extractor (gFEX) is a component of the Level-1 Calorimeter trigger Phase-I upgrade for the ATLAS experiment. It is intended to identify patterns of energy associated with the hadronic decays of high momentum Higgs, W, & Z bosons, top quarks, and exotic particles in real time at the LHC crossing rate. The single processor board will be packaged in an Advanced Telecommunications Computing Architecture (ATCA) module and implemented as a fast reconfigurable processor based on three Xilinx Vertex Ultra-scale FPGAs. The board will receive coarse-granularity information from all the ATLAS calorimeters on 276 optical fibers with the data transferred at the 40 MHz Large Hadron Collider (LHC) clock frequency. The gFEX will be controlled by a single system-on-chip processor, ZYNQ, that will be used to configure all the processor Field-Programmable Gate Array (FPGAs), monitor board health, and interface to external signals. Now, the pre-prototype board which includes one ZYNQ and one Vertex-7 FPGA ...

    20. Autonomous real-time detection of plumes and jets from moons and comets

      SciTech Connect (OSTI)

      Wagstaff, Kiri L.; Thompson, David R.; Bue, Brian D.; Fuchs, Thomas J.

      2014-10-10

      Dynamic activity on the surface of distant moons, asteroids, and comets can manifest as jets or plumes. These phenomena provide information about the interior of the bodies and the forces (gravitation, radiation, thermal) they experience. Fast detection and follow-up study is imperative since the phenomena may be time-varying and because the observing window may be limited (e.g., during a flyby). We have developed an advanced method for real-time detection of plumes and jets using onboard analysis of the data as it is collected. In contrast to prior work, our technique is not restricted to plume detection from spherical bodies, making it relevant for irregularly shaped bodies such as comets. Further, our study analyzes raw data, the form in which it is available on board the spacecraft, rather than fully processed image products. In summary, we contribute a vital assessment of a technique that can be used on board tomorrow's deep space missions to detect, and respond quickly to, new occurrences of plumes and jets.

    1. INFORMATION ENGINEERING Principles, Technologies, Networks, and Applications

      E-Print Network [OSTI]

      Huang, Jianwei

      AccessApplications Smartgrids,GreenCommunications TelecommunicationSwitching Peer-to-PeerSystems OnlineSocialNetworks Internet

    2. PPPL Guest Network Connections Information Sheet

      E-Print Network [OSTI]

      : PPPL-Guest · After connecting to the PPPL-Guest network, open a web browser to register your device

    3. Towards Real-Time High Performance Computing For Power Grid Analysis

      SciTech Connect (OSTI)

      Hui, Peter SY; Lee, Barry; Chikkagoudar, Satish

      2012-11-16

      Real-time computing has traditionally been considered largely in the context of single-processor and embedded systems, and indeed, the terms real-time computing, embedded systems, and control systems are often mentioned in closely related contexts. However, real-time computing in the context of multinode systems, specifically high-performance, cluster-computing systems, remains relatively unexplored. Imposing real-time constraints on a parallel (cluster) computing environment introduces a variety of challenges with respect to the formal verification of the system's timing properties. In this paper, we give a motivating example to demonstrate the need for such a system--- an application to estimate the electromechanical states of the power grid--- and we introduce a formal method for performing verification of certain temporal properties within a system of parallel processes. We describe our work towards a full real-time implementation of the target application--- namely, our progress towards extracting a key mathematical kernel from the application, the formal process by which we analyze the intricate timing behavior of the processes on the cluster, as well as timing measurements taken on our test cluster to demonstrate use of these concepts.

    4. UNLV OFFICE OF INFORMATION TECHNOLOGY NETWORK ACCESS COMPLIANCE POLICY

      E-Print Network [OSTI]

      Walker, Lawrence R.

      UNLV OFFICE OF INFORMATION TECHNOLOGY NETWORK ACCESS COMPLIANCE POLICY RESPONSIBLE ADMINISTRATOR: RESPONSIBLE OFFICE(S): ORIGINALLY IsSUED: APPROVALS: VICE PROVOST FOR INFORMATION TECHNOLOGY OFFICE OF THE VICE PROVOST FOR INFORMATION TECHNOLOGY, JULY 2012 APPROVED BY: -1 \\ '5\\ \\ \\.2- \\ Vice Provostfor

    5. Reducing Information Gathering Latency through Mobile Aerial Sensor Network

      E-Print Network [OSTI]

      Lau, Francis C.M.

      for information gathering through a Mobile Aerial Sensor Network (MASN). We adopt the Hive-Drone model [5] where (Drones) is strategically placed in the sensing field. We then face the challenges of how to control a Mobile Aerial Sensor Network (MASN) based on the Hive- Drone model [5]. MASN comprises a swarm of Micro

    6. EDUCATIONAL INFORMATION SOCIETY IN GREECE: THE GREEK SCHOOL NETWORK

      E-Print Network [OSTI]

      EDUCATIONAL INFORMATION SOCIETY IN GREECE: THE GREEK SCHOOL NETWORK Christos Bouras, Assistant-26500 Rion, Patras, GREECE bouras@ceid.upatras.gr & bouras@cti.gr Dr. Michael Paraskevas Computer Technology Institute, Network Technologies Sector Riga Feraiou 61, GR-26221, Patras, GREECE mparask

    7. Scaling theory for information networks Melanie E. Moses1,

      E-Print Network [OSTI]

      New Mexico, University of

      , University of New Mexico, Albuquerque, NM 87131, USA 2 School of Computing, University of Utah, Salt Lake, brains, the Internet and microprocessors. Distribution networks enable the integrated and coordinated and performance of networked information systems including transistors on chips, hosts on the Internet and neurons

    8. An Information-sharing Architecture for Wireless Sensor Networks

      E-Print Network [OSTI]

      Heinzelman, Wendi

      1 An Information-sharing Architecture for Wireless Sensor Networks Christophe J. Merlin and Wendi B. Heinzelman Department of Electrical and Computer Engineering, University of Rochester, Rochester NY {merlin for a unifying wireless sensor networks archi- tecture that provides more integration than the standard layered

    9. Analysis of informal communication networks - a case study

      E-Print Network [OSTI]

      Schoder, Detlef

      The structure and dynamics of informal communication networks are of central importance for the functionality of enterprise workflows and for performance and innovation of knowledge-centric organizations. While most ...

    10. Real-time correlators in warped AdS/CFT correspondence

      E-Print Network [OSTI]

      Bin Chen; Bo Ning; Zhi-bo Xu

      2009-11-01

      We study real-time correlators in the warped AdS/CFT correspondence. We apply the prescription used in the usual AdS/CFT correspondence and obtain the retarded Green's functions for the scalar and vector fields in the spacelike warped and the null warped black hole backgrounds. We find that the retarded Green's functions and the cross sections are well consistent with the predictions from dual CFT. Our results not only support strongly the conjectured warped AdS/CFT correspondence, but also show that the usual relativistic AdS/CFT prescription of obtaining the real-time correlators remain effective in more general backgrounds with anisotropic conformal infinity.

    11. Real-time, single-step bioassay using nanoplasmonic resonator with ultra-high sensitivity

      DOE Patents [OSTI]

      Zhang, Xiang; Ellman, Jonathan A; Chen, Fanqing Frank; Su, Kai-Hang; Wei, Qi-Huo; Sun, Cheng

      2014-04-01

      A nanoplasmonic resonator (NPR) comprising a metallic nanodisk with alternating shielding layer(s), having a tagged biomolecule conjugated or tethered to the surface of the nanoplasmonic resonator for highly sensitive measurement of enzymatic activity. NPRs enhance Raman signals in a highly reproducible manner, enabling fast detection of protease and enzyme activity, such as Prostate Specific Antigen (paPSA), in real-time, at picomolar sensitivity levels. Experiments on extracellular fluid (ECF) from paPSA-positive cells demonstrate specific detection in a complex bio-fluid background in real-time single-step detection in very small sample volumes.

    12. A Wireless Brain-Machine Interface for Real-Time Speech Synthesis

      E-Print Network [OSTI]

      Guenther, Frank H.; Brumberg, Jonathan S.; Wright, E. Joseph; Nieto-Castanon, Alfonso; Tourville, Jason A.; Panko, Mikhail; Law, Robert; Siebert, Steven A.; Bartels, Jess L.; Andreasen, Dinal S.; Ehirim, Princewill; Mao, Hui; Kennedy, Philip R.

      2009-12-09

      A Wireless Brain-Machine Interface for Real-Time Speech Synthesis Frank H. Guenther1,2*, Jonathan S. Brumberg1,3, E. Joseph Wright3, Alfonso Nieto-Castanon4, Jason A. Tourville1, Mikhail Panko1, Robert Law1, Steven A. Siebert3, Jess L. Bartels3...A Wireless Brain-Machine Interface for Real-Time Speech Synthesis Frank H. Guenther1,2*, Jonathan S. Brumberg1,3, E. Joseph Wright3, Alfonso Nieto-Castanon4, Jason A. Tourville1, Mikhail Panko1, Robert Law1, Steven A. Siebert3, Jess L. Bartels3...

    13. System, device, and methods for real-time screening of live cells, biomarkers, and chemical signatures

      DOE Patents [OSTI]

      Sundaram, S Kamakshi [Richland, WA; Riley, Brian J [West Richland, WA; Weber, Thomas J [Richland, WA; Sacksteder, Colette A [West Richland, WA; Addleman, R Shane [Benton City, WA

      2011-06-07

      An ATR-FTIR device and system are described that defect live-cell responses to stimuli and perturbations in real-time. The system and device can monitor perturbations resulting from exposures to various physical, chemical, and biological materials in real-time, as well as those sustained over a long period of time, including those associated with stimuli having unknown modes-of-action (e.g. nanoparticles). The device and system can also be used to identify specific chemical species or substances that profile cellular responses to these perturbations.

    14. Real-Time Met Data from Around the Site - Hanford Site

      Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

      AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMassR&D100 Winners * Impacts onReal-Time Chemical Imaging of BacterialReal Time Met

    15. Real-time Process Monitoring and Temperature Mapping of the 3D Polymer

      Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

      AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMassR&D100 Winners * Impacts onReal-Time Chemical Imaging of BacterialReal Time

    16. Value of Probabilistic Weather Forecasts: Assessment by Real-Time Optimization of Irrigation Scheduling

      SciTech Connect (OSTI)

      Cai, Ximing; Hejazi, Mohamad I.; Wang, Dingbao

      2011-09-29

      This paper presents a modeling framework for real-time decision support for irrigation scheduling using the National Oceanic and Atmospheric Administration's (NOAA's) probabilistic rainfall forecasts. The forecasts and their probability distributions are incorporated into a simulation-optimization modeling framework. In this study, modeling irrigation is determined by a stochastic optimization program based on the simulated soil moisture and crop water-stress status and the forecasted rainfall for the next 1-7 days. The modeling framework is applied to irrigated corn in Mason County, Illinois. It is found that there is ample potential to improve current farmers practices by simply using the proposed simulation-optimization framework, which uses the present soil moisture and crop evapotranspiration information even without any forecasts. It is found that the values of the forecasts vary across dry, normal, and wet years. More significant economic gains are found in normal and wet years than in dry years under the various forecast horizons. To mitigate drought effect on crop yield through irrigation, medium- or long-term climate predictions likely play a more important role than short-term forecasts. NOAA's imperfect 1-week forecast is still valuable in terms of both profit gain and water saving. Compared with the no-rain forecast case, the short-term imperfect forecasts could lead to additional 2.4-8.5% gain in profit and 11.0-26.9% water saving. However, the performance of the imperfect forecast is only slightly better than the ensemble weather forecast based on historical data and slightly inferior to the perfect forecast. It seems that the 1-week forecast horizon is too limited to evaluate the role of the various forecast scenarios for irrigation scheduling, which is actually a seasonal decision issue. For irrigation scheduling, both the forecast quality and the length of forecast time horizon matter. Thus, longer forecasts might be necessary to evaluate the role of forecasts for irrigation scheduling in a more effective way.

    17. A Comprehensive Statistically-Based Method to Interpret Real-Time Flowing Measurements

      SciTech Connect (OSTI)

      Pinan Dawkrajai; Keita Yoshioka; Analis A. Romero; Ding Zhu; A.D. Hill; Larry W. Lake

      2005-10-01

      This project is motivated by the increasing use of distributed temperature sensors for real-time monitoring of complex wells (horizontal, multilateral and multi-branching wells) to infer the profiles of oil, gas, and water entry. Measured information can be used to interpret flow profiles along the wellbore including junction and build section. In this second project year, we have completed a forward model to predict temperature and pressure profiles in complex wells. As a comprehensive temperature model, we have developed an analytical reservoir flow model which takes into account Joule-Thomson effects in the near well vicinity and multiphase non-isothermal producing wellbore model, and couples those models accounting mass and heat transfer between them. For further inferences such as water coning or gas evaporation, we will need a numerical non-isothermal reservoir simulator, and unlike existing (thermal recovery, geothermal) simulators, it should capture subtle temperature change occurring in a normal production. We will show the results from the analytical coupled model (analytical reservoir solution coupled with numerical multi-segment well model) to infer the anomalous temperature or pressure profiles under various conditions, and the preliminary results from the numerical coupled reservoir model which solves full matrix including wellbore grids. We applied Ramey's model to the build section and used an enthalpy balance to infer the temperature profile at the junction. The multilateral wellbore temperature model was applied to a wide range of cases varying fluid thermal properties, absolute values of temperature and pressure, geothermal gradients, flow rates from each lateral, and the trajectories of each build section.

    18. Real-time characterization of partially observed epidemics using surrogate models.

      SciTech Connect (OSTI)

      Safta, Cosmin; Ray, Jaideep; Lefantzi, Sophia; Crary, David; Sargsyan, Khachik; Cheng, Karen

      2011-09-01

      We present a statistical method, predicated on the use of surrogate models, for the 'real-time' characterization of partially observed epidemics. Observations consist of counts of symptomatic patients, diagnosed with the disease, that may be available in the early epoch of an ongoing outbreak. Characterization, in this context, refers to estimation of epidemiological parameters that can be used to provide short-term forecasts of the ongoing epidemic, as well as to provide gross information on the dynamics of the etiologic agent in the affected population e.g., the time-dependent infection rate. The characterization problem is formulated as a Bayesian inverse problem, and epidemiological parameters are estimated as distributions using a Markov chain Monte Carlo (MCMC) method, thus quantifying the uncertainty in the estimates. In some cases, the inverse problem can be computationally expensive, primarily due to the epidemic simulator used inside the inversion algorithm. We present a method, based on replacing the epidemiological model with computationally inexpensive surrogates, that can reduce the computational time to minutes, without a significant loss of accuracy. The surrogates are created by projecting the output of an epidemiological model on a set of polynomial chaos bases; thereafter, computations involving the surrogate model reduce to evaluations of a polynomial. We find that the epidemic characterizations obtained with the surrogate models is very close to that obtained with the original model. We also find that the number of projections required to construct a surrogate model is O(10)-O(10{sup 2}) less than the number of samples required by the MCMC to construct a stationary posterior distribution; thus, depending upon the epidemiological models in question, it may be possible to omit the offline creation and caching of surrogate models, prior to their use in an inverse problem. The technique is demonstrated on synthetic data as well as observations from the 1918 influenza pandemic collected at Camp Custer, Michigan.

    19. Puget Sound Operational Forecast System - A Real-time Predictive Tool for Marine Resource Management and Emergency Responses

      SciTech Connect (OSTI)

      Yang, Zhaoqing; Khangaonkar, Tarang; Chase, Jared M.; Wang, Taiping

      2009-12-01

      To support marine ecological resource management and emergency response and to enhance scientific understanding of physical and biogeochemical processes in Puget Sound, a real-time Puget Sound Operational Forecast System (PS-OFS) was developed by the Coastal Ocean Dynamics & Ecosystem Modeling group (CODEM) of Pacific Northwest National Laboratory (PNNL). PS-OFS employs the state-of-the-art three-dimensional coastal ocean model and closely follows the standards and procedures established by National Oceanic and Atmospheric Administration (NOAA) National Ocean Service (NOS). PS-OFS consists of four key components supporting the Puget Sound Circulation and Transport Model (PS-CTM): data acquisition, model execution and product archive, model skill assessment, and model results dissemination. This paper provides an overview of PS-OFS and its ability to provide vital real-time oceanographic information to the Puget Sound community. PS-OFS supports pacific northwest region’s growing need for a predictive tool to assist water quality management, fish stock recovery efforts, maritime emergency response, nearshore land-use planning, and the challenge of climate change and sea level rise impacts. The structure of PS-OFS and examples of the system inputs and outputs, forecast results are presented in details.

    20. Real Time Pricing as a Default or Optional Service for C&I Customers: A Comparative Analysis of Eight Case Studies

      E-Print Network [OSTI]

      Barbose, Galen; Goldman, Charles; Bharvirkar, Ranjit; Hopper, Nicole; Ting, Michael; Neenan, Bernie

      2005-01-01

      Load Response Program – Real Time Option is a unique examplePJM Economic LRP – Real Time Option, PJM Emergency LRPPJM Economic LRP – Real Time Option PowerShare – QuoteOption

    1. Delegating Network Security with More Information

      E-Print Network [OSTI]

      Naous, Jad

      Network security is gravitating towards more centralized control. Strong centralization places a heavy burden on the administrator who has to manage complex security policies and be able to adapt to users' requests. To be ...

    2. Real-Time Distribution Feeder Performance Monitoring, Advisory Control, and Health Management System

      SciTech Connect (OSTI)

      Stoupis, James; Mousavi, Mirrasoul

      2014-09-30

      New data collection system equipment was installed in Xcel Energy substations and data was collected from 6 substations and 20 feeders. During Phase I, ABB collected and analyzed 793 real-time events to date from 6 Xcel Energy substations and continues today. The development and integration of several applications was completed during the course of this project, including a model-based faulted segment identification algorithm, with very positive results validated with field-gathered data discussed and included in this report. For mostly underground feeders, the success rate is 90% and the overreach rate is 90%. For mostly overhead feeders, the success rate is 74% and the overreach rate is 50%. The developed method is producing very accurate results for mostly underground feeders. For mostly overhead feeders, due to the bad OMS data quality and varying fault resistance when arcing, the developed method is producing good results but with much room for improvement. One area where the algorithm can be improved is the accuracy for sub-cycle fault events. In these cases, the accuracy of the conventional signal processing methods suffers due to most of these methods being based on a one-cycle processing window. By improving the signal processing accuracy, the accuracy of the faulted segment identification algorithm will also improve significantly. ABB intends to devote research in this area in the near future to help solve this problem. Other new applications developed during the course of the project include volt/VAR monitoring, unbalanced capacitor switching detection, unbalanced feeder loading detection, and feeder overloading detection. An important aspect of the demonstration phase of the project is to show the ability to provide adequate “heads-up” time ahead of customer calls or AMI reports so that the operators are provided with the much needed time to collect information needed to address an outage. The advance notification feature of the demonstration system provides this time and helps accelerate service restoration ultimately. To demonstrate the effectiveness of this feature, a demo system using substation data alone was set up to compare the minutes saved over a period of 22 months for two feeders where the real-time notification system has been deployed. The metric used for performance assessment is the time difference between the actual outage time from the OMS versus the time the notification email was received on the operators desk. Over the period of 22 months, we have accumulated over 7600 minutes (32 hours) ahead of actual outage time compared to the OMS timestamps. The significance of this analysis is that it shows the potential to reduce the SAIDI minutes and directly impact utility performance in terms of outage duration. If deployed at scale, it would have a significant impact on system reliability. To put this number in perspective, it would be helpful to assign a dollar figure to the potential savings that could be realized. According to the host utility, the average cost for each customer-minute-out (CMO) is approximately $0.30 across the operating company. This includes both direct and indirect costs such as bad press. The outage data over the previous 4 years show that the average customer count on primary/tap level outages is about 56. Accordingly, the total minutes saved amounts to 425,600 CMOs on the average. This would in turn result in a potential cost savings figure of $127,680 for two feeders alone over the period of performance. This empirical evidence validates the strong value proposition of the project that was contemplated at the onset and its potential impact to reduce outage duration in support of DOE’s goal of 20%

    3. What if CLIQUE were fast? Maximum Cliques in Information Networks and Strong Components in Temporal Networks

      E-Print Network [OSTI]

      Rossi, Ryan A; Gebremedhin, Assefaw H; Patwary, Md Mostofa Ali

      2012-01-01

      Exact maximum clique finders have progressed to the point where we can investigate cliques in million-node social and information networks, as well as find strongly connected components in temporal networks. We use one such finder to study a large collection of modern networks emanating from biological, social, and technological domains. We show inter-relationships between maximum cliques and several other common network properties, including network density, maximum core, and number of triangles. In temporal networks, we find that the largest temporal strong components have around 20-30% of the vertices of the entire network. These components represent groups of highly communicative individuals. In addition, we discuss and improve the performance and utility of the maximum clique finder itself.

    4. A data-centric approach to composing embedded, real-time software Roel Wuytsa

      E-Print Network [OSTI]

      Ducasse, Stéphane

      1 A data-centric approach to composing embedded, real-time software components Roel Wuytsa ,St not benefitted from component-based software development techniques. This paper describes a data-centric of the project, ABB. The central element of the approach is a data-centric component model that makes it possible

    5. Sensor applications have now touched onto the realms of real-time data processing involving

      E-Print Network [OSTI]

      Najjar, Walid A.

      sensing needs, coupled with an interface integrating up to gigabyte scale energy efficient data storage sound / voice samples. Such applications demand real time storage, filtering, frequency domain analysis involving algorithms as sophisticated as Fast Fourier Transform (FFT), Finite Impulse Response (FIR

    6. Approximate Response Time for Fixed Priority Real-Time Systems with Energy-Harvesting

      E-Print Network [OSTI]

      Boyer, Edmond

      Approximate Response Time for Fixed Priority Real-Time Systems with Energy-Harvesting Yasmina constraints. In this problem, energy is harvested from the ambient environment and used to replenish a storage on whether their rate of energy consumption is (i) more than or (ii) no more than the storage unit

    7. A Real-Time Rodent Tracking System for Both Light and Dark Cycle Behavior Analysis

      E-Print Network [OSTI]

      Motai, Yuichi

      monitoring of rodent behavior in a home cage environment, either in a daylight condition (light-cycle) usingA Real-Time Rodent Tracking System for Both Light and Dark Cycle Behavior Analysis Jane Brooks Zurn-field locomotor activity under 880 nm and 940 nm wavelengths of NIR, as well as visible white light and a "dark

    8. Using the Air Void Analyzer for Real-Time Quality Control Adjustments

      E-Print Network [OSTI]

      May 2006 Using the Air Void Analyzer for Real-Time Quality Control Adjustments in the Field Tech Brief by Jim Grove, P.E. Bob Steffes Mark Anderson-Wilk Overview of the Air Void Analyzer The air void analyzer (AVA) with its independent isolation base can be used to accurately evaluate the air void system

    9. Discrete-Time Scheduling under Real-Time Constraints Eduard Cerny

      E-Print Network [OSTI]

      Aboulhamid, El Mostapha

      into a discrete- time relative schedule. Such a schedule serves as the basis for implementing a synchronous state-machine controller. Keywords: Timing diagrams, relative scheduling, real-time constraints, synchronous state machines that is suitable for synchronous system implementations. The input specification is in the form of timing diagrams

    10. Day-Ahead and Real-Time Models for Large-Scale Energy Storage

      E-Print Network [OSTI]

      Engineering Research Center Empowering Minds to Engineer the Future Electric Energy System #12;DayDay-Ahead and Real-Time Models for Large-Scale Energy Storage Final Project Report Power Systems of Electrical, Computer, and Energy Engineering P.O. BOX 875706 Tempe, AZ 85287-5706 Phone: 480 965-1276 Fax

    11. Distributed Real-Time Power Balancing in Renewable-Integrated Power Grids

      E-Print Network [OSTI]

      Liang, Ben

      , taking into account the uncertainty of the renewable generation, loads, and energy prices. We and more renewable energy sources such as wind and solar are expected to be integrated into the power grids balancing. Real-time control is mainly motivated by the unpredictability of renewable sources, which can

    12. SuperPin: Parallelizing Dynamic Instrumentation for Real-Time Performance Steven Wallace

      E-Print Network [OSTI]

      Hazelwood, Kim

      SuperPin: Parallelizing Dynamic Instrumentation for Real-Time Performance Steven Wallace Intel Corporation Kim Hazelwood University of Virginia Abstract Dynamic instrumentation systems have proven to be ex drawback of modern instrumentation systems is that the instrumented applications often execute several

    13. Real-Time Deep-Ocean Tsunami Measuring, Monitoring, and Reporting System

      E-Print Network [OSTI]

      Real-Time Deep-Ocean Tsunami Measuring, Monitoring, and Reporting System: The NOAA DART II Environmental Laboratory (PMEL) Hugh B. Milburn Oceanographic Engineer 1. Introduction This paper describes the system components that make up the second-generation Deep-Ocean Assessment and Reporting of Tsunamis

    14. Flight Testing a Real Time Implementation of a UAV Path Planner Using Direct Collocation

      E-Print Network [OSTI]

      Flight Testing a Real Time Implementation of a UAV Path Planner Using Direct Collocation Brian R by tracking a second UAV flying a predefined pattern. Finally, a method of commanding the observation vector ^s UAV sensor line of sight unit vector p Attraction point u UAV Control vector xt Target state

    15. Energy Aware Dynamic Voltage and Frequency Selection for Real-Time Systems with Energy Harvesting

      E-Print Network [OSTI]

      Qiu, Qinru

      Energy Aware Dynamic Voltage and Frequency Selection for Real-Time Systems with Energy Harvesting}@binghamton.edu Abstract In this paper, an energy aware dynamic voltage and frequency selection (EA-DVFS) algorithm energy and the harvested energy in a future duration. Specifically, if the system has sufficient energy

    16. Real-Time Optical Characterization of Laser Oxidation Process in Bimetallic Direct Write Gray Scale Photomasks

      E-Print Network [OSTI]

      Chapman, Glenn H.

      density (OD), changes smoothly with increasing laser power, from ~3.0OD (unexposed) to developed capable of providing real time optical density and exposure power changes for the bimetallic thin) are exposed to laser light with power greater than its conversion threshold power, the thin film oxidizes

    17. REAL-TIME DEPTH BOUNDARY OPTIMIZATION FOR LOCAL AREA-BASED STEREO David Gallup1

      E-Print Network [OSTI]

      Pollefeys, Marc

      a snake-like energy optimized with a dynamic programming method. This clean-up step requires only O(#pixels) time and space, making it well-suited for real-time where local area-based stereo is often used. Our depth estimates are needed immediately, or for processing large amounts of data as in urban

    18. Toward Real-Time Simulation of Physics Based Lithium-Ion Battery Models

      E-Print Network [OSTI]

      Subramanian, Venkat

      Toward Real-Time Simulation of Physics Based Lithium-Ion Battery Models Venkat R. Subramanian Technological University, Cookeville, Tennessee 38505, USA Recent interest in lithium-ion batteries for electric on the computational efficiency of lithium-ion battery models. This paper presents an effective approach to simulate

    19. PyFX: A framework for programming real-time Calle Lejdfors and Lennart Ohlsson

      E-Print Network [OSTI]

      in cinematic graphics have long relied on procedural techniques and in the last few years the evolution real-time effects is today significantly harder than programming cinematic effects. The reason. In the world of cinematic graphics programming visual effects is known as shader pro- gramming. The term shader

    20. Using Real-Time Three-Dimensional Ultrasound to Characterize Mitral Valve Motion

      E-Print Network [OSTI]

      Ayache, Nicholas

      Using Real-Time Three-Dimensional Ultrasound to Characterize Mitral Valve Motion Paul M. Novotnya results aim to fully characterize the four-dimensional (3D + time) movement of the mitral valve for better understanding of its behavior prior to surgical interventions, such as mitral valve repair. A behavior model

    1. Energy Efficient Building Environment Control Strategies Using Real-time Occupancy Measurements

      E-Print Network [OSTI]

      Cerpa, Alberto E.

      Energy Efficient Building Environment Control Strategies Using Real-time Occupancy Measurements (HVAC) systems ac- count for 50% of the total energy budget in buildings [5]. Prior research has shown 10 to 15% of HVAC energy can be reduced in buildings that set ventilation rates based on maximum

    2. Field Test to Demonstrate Real-Time In-Situ Detection of Volatile Organic Compounds

      E-Print Network [OSTI]

      Ho, Cliff

      1 Field Test to Demonstrate Real-Time In-Situ Detection of Volatile Organic Compounds Hazmat Spill Center, Nevada Test Site September 19-25, 2001 Clifford K. Ho Sandia National Laboratories Albuquerque-filled 55- gallon drum at the Hazmat Spill Center at the Nevada Test Site. Background and Objectives Tens

    3. CPU Scheduling for Statistically-Assured Real-Time Performance and Improved Energy Efficiency

      E-Print Network [OSTI]

      Ravindran, Binoy

      CPU Scheduling for Statistically-Assured Real-Time Performance and Improved Energy Efficiency@mitre.org ABSTRACT We present a CPU scheduling algorithm, called Energy-efficient Utility Accrual Algorithm (or EUA/utility functions. For battery-powered embedded systems, system-level energy consumption is also a primary concern

    4. OpenConflict: Preventing Real Time Map Hacks in Online Games Elie Bursztein

      E-Print Network [OSTI]

      Boneh, Dan

      real-time strategy games by snooping on the memory used by the game. Kartograph is passive and cannot be detected remotely. Motivated by these passive attacks, we present secure protocols for distributing game Association[1], 67% of American households play video games, and computer games represent a 9.9 billion dollar

    5. Real Time Monitoring of Subsidence Along I-70 in Washington, Pennsylvania Kevin M. O==Connor

      E-Print Network [OSTI]

      Real Time Monitoring of Subsidence Along I-70 in Washington, Pennsylvania Kevin M. O==Connor Geo for repairs nearly a dozen times over the last several years. Mine subsidence also caused power lines along, past experience had taught PennDoT that the pavement would subside and crack, and there was concern

    6. Real-Time Forecasting for the Antarctic: An Evaluation of the Antarctic Mesoscale Prediction System (AMPS)*

      E-Print Network [OSTI]

      Howat, Ian M.

      Real-Time Forecasting for the Antarctic: An Evaluation of the Antarctic Mesoscale Prediction System. MANNING AND JORDAN G. POWERS Mesoscale and Microscale Meteorology Division, National Center.S. Antarctic Program's field operations, the Antarctic Mesoscale Prediction System (AMPS) was implemented in Oc

    7. In-Situ Metrology: the Path to Real-Time Advanced Process Control

      E-Print Network [OSTI]

      Rubloff, Gary W.

      in semiconductor technology development and manufacturing. [1,2] Advanced process control (APC) [3, 4] is aimed fault management and course correction, i.e., for real-time advanced process control We have also at exploiting metrology to increase equipment productivity and lower manufacturing costs. Early efforts toward

    8. Strategic, Tactical and RealTime Planning of Locomotives at Norfolk Southern Using Approximate Dynamic Programming

      E-Print Network [OSTI]

      Powell, Warren B.

      Strategic, Tactical and RealTime Planning of Locomotives at Norfolk Southern Using operations. This strategy can be used for strategic and tactical planning, and can also be adapted with a strategic planning system. #12; Page 1 1 Locomotive planning is one of the most complex

    9. Handles Revisited: Optimising Performance and Memory Costs in a Real-Time Collector

      E-Print Network [OSTI]

      Kent, University of

      collectors do this by splitting objects (Jamaica [37], Sun's RTS [9]), some move objects (Aonix's PERC [30Handles Revisited: Optimising Performance and Memory Costs in a Real-Time Collector Tomas Kalibera garbage collectors must update all references to ob- jects they move. Updating is a lengthy operation

    10. Real-time Pose Estimation of Deformable Objects Using a Volumetric Approach

      E-Print Network [OSTI]

      Chang, Shih-Fu

      , Michael Case, Shih-Fu Chang, Peter K. Allen Abstract-- Pose estimation of deformable objects is a funda and garment folding. indicates equal contribution Yinxiao Li, Michael Case, and Peter K. Allen method can achieve real-time pose recognition with more accurate prediction of grasping point locations

    11. EFFICIENT PRICING IN ELECTRICITY MARKETS: WHO IS ON REAL-TIME PRICING 

      E-Print Network [OSTI]

      Fontana, Michelle

      2011-08-08

      commercial and industrial users of electricity pay prices that reflect the social cost of power at the time of consumption. This pricing mechanism is called “real-time pricing” (RTP) in electricity markets. I have access to a unique, new dataset of virtually...

    12. Computationally Efficient Clustering of Power Supplies in Heterogeneous Real Time Systems

      E-Print Network [OSTI]

      Friedman, Eby G.

      functionally diverse systems with multiple power domains. To provide a high quality power delivery system an integrated part of the power management system. To maintain a high quality power supply despite increasingComputationally Efficient Clustering of Power Supplies in Heterogeneous Real Time Systems Inna

    13. Real-Time Power Quality Waveform Recognition with a Programmable Digital

      E-Print Network [OSTI]

      Mamishev, Alexander

      quality (PQ) monitoring is an important issue to electric utilities and many industrial power customers) related disturbances in power systems by electric utilities and industrial power customers. SoftwareReal-Time Power Quality Waveform Recognition with a Programmable Digital Signal Processor M. Wang

    14. Qualitative real-time range extraction for preplanned scene partitioning using laser beam coding

      E-Print Network [OSTI]

      Rivlin, Ehud

      , and range from motion. Active sensing refers to techniques that impose structured energy sources, such asQualitative real-time range extraction for preplanned scene partitioning using laser beam coding 2005 Communicated by R. Davies Abstract This paper proposes a novel technique to extract range using

    15. ROBUST REAL-TIME EGOMOTION FROM STEREO IMAGES Louis-Philippe Morency

      E-Print Network [OSTI]

      Darrell, Trevor

      constraint. As shown in Figure 1, both registration techniques share the same iterative frame- workROBUST REAL-TIME EGOMOTION FROM STEREO IMAGES Louis-Philippe Morency Artificial Intelligence camera displacement using stereo images. The rela- tive transformation between two stereo image pairs

    16. Predictable Interrupt Management for Real Time Kernels over conventional PC Hardware1

      E-Print Network [OSTI]

      Mejia-Alvarez, Pedro

      which this integrated model improves the traditional model. The design of a flexible and portable kernel-CONACyT 42151-Y, and CONACYT 42449-Y Mexico. Abstract In this paper we analyze the traditional model on real-time systems. As a result of this analysis, we propose a model that integrates interrupts

    17. A Real-time World Model for Multi-Robot Teams with High-Latency Communication

      E-Print Network [OSTI]

      Veloso, Manuela M.

      A Real-time World Model for Multi-Robot Teams with High-Latency Communication Maayan Roth, Douglas Vail, and Manuela Veloso School of Computer Science Carnegie Mellon University Pittsburgh PA, 15213- structing a world model in a multi-robot team. We in- troduce two separate world models, namely

    18. A Real-time Coherent Dedispersion Pipeline for the Giant Metrewave Radio Telescope

      E-Print Network [OSTI]

      De, Kishalay

      2015-01-01

      A fully real-time coherent dedispersion system has been developed for the pulsar back-end at the Giant Metrewave Radio Telescope (GMRT). The dedispersion pipeline uses the single phased array voltage beam produced by the existing GMRT software back-end (GSB) to produce coherently dedispersed intensity output in real time, for the currently operational bandwidths of 16 MHz and 32 MHz. Provision has also been made to coherently dedisperse voltage beam data from observations recorded on disk. We discuss the design and implementation of the real-time coherent dedispersion system, describing the steps carried out to optimise the performance of the pipeline. Presently functioning on an Intel Xeon X5550 CPU equipped with a NVIDIA Tesla C2075 GPU, the pipeline allows dispersion free, high time resolution data to be obtained in real-time. We illustrate the significant improvements over the existing incoherent dedispersion system at the GMRT, and present some preliminary results obtained from studies of pulsars using t...

    19. Optimal Real-time Pricing Algorithm Based on Utility Maximization for Smart Grid

      E-Print Network [OSTI]

      Mohsenian-Rad, Hamed

      Optimal Real-time Pricing Algorithm Based on Utility Maximization for Smart Grid Pedram Samadi algorithm for the future smart grid. We focus on the interactions between the smart meters and the energy-mail:{psamadi, hamed, rschober, vincentw, jurij}@ece.ubc.ca Abstract--In this paper, we consider a smart power infras

    20. Real-time Photo Mining from the Twitter Stream: Event Photo Discovery and Food Photo Detection

      E-Print Network [OSTI]

      Yanai, Keiji

      Real-time Photo Mining from the Twitter Stream: Event Photo Discovery and Food Photo Detection,kaneko-t,kawano-y}@mm.inf.uec.ac.jp Abstract--So many people are posting photos as well as short messages to Twitter every minutes from everywhere on the earth. By monitoring the Twitter stream, we can obtain various kinds of photos with texts